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CVE-2026-40026

Sleuth Kit ISO9660 SUSP Extension Reference Out-of-Bounds Read

4.8 MediumFix available

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Passive

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
Low

Exploit likelihood

0.13%Up 0.1 points since Apr 9, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.8

Sleuth Kit ISO9660 SUSP Extension Reference Out-of-Bounds Read

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.

Record
CVE-2026-40026
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
4.4 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Weakness
CWE-125
Updated
2026-11-02
EUVDEUVD-2026-20763 4.8

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.

Record
EUVD-2026-20763
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-3pvc-h22x-rq5v 4.8

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660...

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.

Record
GHSA-3pvc-h22x-rq5v
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
4.4 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Weakness
CWE-125
Updated
2026-11-02
NVD 4.8

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.

Record
CVE-2026-40026
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
4.4 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
OSV 4.8

Sleuth Kit ISO9660 SUSP Extension Reference Out-of-Bounds Read

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.

Record
CVE-2026-40026
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness
CWE-125
Updated
2026-11-02
OSVDEBIAN-CVE-2026-40026 7.1

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.

Record
DEBIAN-CVE-2026-40026
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated
2026-11-02
Show 8 moreShow less
OSVOESA-2026-1934 8.4

sleuthkit security update

The Sleuth Kit (previously known as TASK) is a collection of UNIX-based command line file system forensic tools that allow an investigator to examine NTFS, FAT, FFS, EXT2FS, EXT3FS and ExFAT file systems of a suspect computer in a non-intrusive fashion. The tools have a layer-based design and can extract data from internal file system structures. Because the tools do not rely on the operating system to process the file systems, deleted and hidden content is shown.

Security Fix(es):

A path traversal vulnerability exists in the tsk_recover tool of The Sleuth Kit through version 4.14.0. An attacker can craft a malicious filesystem image containing filenames or directory paths with path traversal sequences (e.g., /../). When processed by tsk_recover, this can cause files to be written to arbitrary locations outside the intended output directory. This could potentially lead to code execution by overwriting critical files such as shell configuration files or cron entries.(CVE-2026-40024)

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.(CVE-2026-40026)

Record
OESA-2026-1934
CVSS 4.0
8.4 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVOESA-2026-1935 8.4

sleuthkit security update

The Sleuth Kit (previously known as TASK) is a collection of UNIX-based command line file system forensic tools that allow an investigator to examine NTFS, FAT, FFS, EXT2FS, EXT3FS and ExFAT file systems of a suspect computer in a non-intrusive fashion. The tools have a layer-based design and can extract data from internal file system structures. Because the tools do not rely on the operating system to process the file systems, deleted and hidden content is shown.

Security Fix(es):

A path traversal vulnerability exists in the tsk_recover tool of The Sleuth Kit through version 4.14.0. An attacker can craft a malicious filesystem image containing filenames or directory paths with path traversal sequences (e.g., /../). When processed by tsk_recover, this can cause files to be written to arbitrary locations outside the intended output directory. This could potentially lead to code execution by overwriting critical files such as shell configuration files or cron entries.(CVE-2026-40024)

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.(CVE-2026-40026)

Record
OESA-2026-1935
CVSS 4.0
8.4 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVOESA-2026-1936 8.4

sleuthkit security update

The Sleuth Kit (previously known as TASK) is a collection of UNIX-based command line file system forensic tools that allow an investigator to examine NTFS, FAT, FFS, EXT2FS, EXT3FS and ExFAT file systems of a suspect computer in a non-intrusive fashion. The tools have a layer-based design and can extract data from internal file system structures. Because the tools do not rely on the operating system to process the file systems, deleted and hidden content is shown.

Security Fix(es):

A path traversal vulnerability exists in the tsk_recover tool of The Sleuth Kit through version 4.14.0. An attacker can craft a malicious filesystem image containing filenames or directory paths with path traversal sequences (e.g., /../). When processed by tsk_recover, this can cause files to be written to arbitrary locations outside the intended output directory. This could potentially lead to code execution by overwriting critical files such as shell configuration files or cron entries.(CVE-2026-40024)

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the APFS filesystem keybag parser where the wrapped_key_parser class follows attacker-controlled length fields without bounds checking, causing heap reads past the allocated buffer. An attacker can craft a malicious APFS disk image that triggers information disclosure or crashes when processed by any Sleuth Kit tool that parses APFS volumes.(CVE-2026-40025)

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.(CVE-2026-40026)

Record
OESA-2026-1936
CVSS 4.0
8.4 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVOESA-2026-1937 8.4

sleuthkit security update

The Sleuth Kit (previously known as TASK) is a collection of UNIX-based command line file system forensic tools that allow an investigator to examine NTFS, FAT, FFS, EXT2FS, EXT3FS and ExFAT file systems of a suspect computer in a non-intrusive fashion. The tools have a layer-based design and can extract data from internal file system structures. Because the tools do not rely on the operating system to process the file systems, deleted and hidden content is shown.

Security Fix(es):

A path traversal vulnerability exists in the tsk_recover tool of The Sleuth Kit through version 4.14.0. An attacker can craft a malicious filesystem image containing filenames or directory paths with path traversal sequences (e.g., /../). When processed by tsk_recover, this can cause files to be written to arbitrary locations outside the intended output directory. This could potentially lead to code execution by overwriting critical files such as shell configuration files or cron entries.(CVE-2026-40024)

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the APFS filesystem keybag parser where the wrapped_key_parser class follows attacker-controlled length fields without bounds checking, causing heap reads past the allocated buffer. An attacker can craft a malicious APFS disk image that triggers information disclosure or crashes when processed by any Sleuth Kit tool that parses APFS volumes.(CVE-2026-40025)

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.(CVE-2026-40026)

Record
OESA-2026-1937
CVSS 4.0
8.4 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVOESA-2026-1938 8.4

sleuthkit security update

The Sleuth Kit (previously known as TASK) is a collection of UNIX-based command line file system forensic tools that allow an investigator to examine NTFS, FAT, FFS, EXT2FS, EXT3FS and ExFAT file systems of a suspect computer in a non-intrusive fashion. The tools have a layer-based design and can extract data from internal file system structures. Because the tools do not rely on the operating system to process the file systems, deleted and hidden content is shown.

Security Fix(es):

A path traversal vulnerability exists in the tsk_recover tool of The Sleuth Kit through version 4.14.0. An attacker can craft a malicious filesystem image containing filenames or directory paths with path traversal sequences (e.g., /../). When processed by tsk_recover, this can cause files to be written to arbitrary locations outside the intended output directory. This could potentially lead to code execution by overwriting critical files such as shell configuration files or cron entries.(CVE-2026-40024)

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the APFS filesystem keybag parser where the wrapped_key_parser class follows attacker-controlled length fields without bounds checking, causing heap reads past the allocated buffer. An attacker can craft a malicious APFS disk image that triggers information disclosure or crashes when processed by any Sleuth Kit tool that parses APFS volumes.(CVE-2026-40025)

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.(CVE-2026-40026)

Record
OESA-2026-1938
CVSS 4.0
8.4 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVOESA-2026-1939 8.4

sleuthkit security update

The Sleuth Kit (previously known as TASK) is a collection of UNIX-based command line file system forensic tools that allow an investigator to examine NTFS, FAT, FFS, EXT2FS, EXT3FS and ExFAT file systems of a suspect computer in a non-intrusive fashion. The tools have a layer-based design and can extract data from internal file system structures. Because the tools do not rely on the operating system to process the file systems, deleted and hidden content is shown.

Security Fix(es):

A path traversal vulnerability exists in the tsk_recover tool of The Sleuth Kit through version 4.14.0. An attacker can craft a malicious filesystem image containing filenames or directory paths with path traversal sequences (e.g., /../). When processed by tsk_recover, this can cause files to be written to arbitrary locations outside the intended output directory. This could potentially lead to code execution by overwriting critical files such as shell configuration files or cron entries.(CVE-2026-40024)

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the APFS filesystem keybag parser where the wrapped_key_parser class follows attacker-controlled length fields without bounds checking, causing heap reads past the allocated buffer. An attacker can craft a malicious APFS disk image that triggers information disclosure or crashes when processed by any Sleuth Kit tool that parses APFS volumes.(CVE-2026-40025)

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.(CVE-2026-40026)

Record
OESA-2026-1939
CVSS 4.0
8.4 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVUBUNTU-CVE-2026-40026 4.8

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.

Record
UBUNTU-CVE-2026-40026
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CVSS 3.1
4.4 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Updated
2026-11-02
OSVAZL-82001 No score

CVE-2026-40026 affecting package sleuthkit for versions less than 4.12.1-2

The Sleuth Kit through 4.14.0 contains an out-of-bounds read vulnerability in the ISO9660 filesystem parser where the parse_susp() function trusts len_id, len_des, and len_src fields from the disk image to memcpy data into a stack buffer without verifying that the source data falls within the parsed SUSP block. An attacker can craft a malicious ISO image that causes reads past the end of the SUSP data buffer, and a zero-length SUSP entry can trigger an infinite parsing loop.

Record
AZL-82001
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
sleuthkit
Azure Linux:3
before 4.12.1-2
4.12.1-2
sleuthkit
Debian:12
All versions, plus listed versions
4.11.1+dfsg-14.12.0+dfsg-14.12.1+dfsg-14.12.1+dfsg-1.14.12.1+dfsg-1.1~exp14.12.1+dfsg-24.12.1+dfsg-34.14.0+dfsg-1
None known
sleuthkit
Debian:13
All versions, plus listed versions
4.12.1+dfsg-34.14.0+dfsg-1
None known
sleuthkit
Debian:14
All versions, plus listed versions
4.12.1+dfsg-34.14.0+dfsg-1
None known
sleuthkit
openEuler:20.03-LTS-SP4
before 4.6.7-12.oe2003sp4
4.6.7-12.oe2003sp4
sleuthkit
openEuler:22.03-LTS-SP4
before 4.6.7-14.oe2203sp4
4.6.7-14.oe2203sp4
sleuthkit
openEuler:24.03-LTS
before 4.12.1-3.oe2403
4.12.1-3.oe2403
sleuthkit
openEuler:24.03-LTS-SP1
before 4.12.1-3.oe2403sp1
4.12.1-3.oe2403sp1
sleuthkit
openEuler:24.03-LTS-SP2
before 4.12.1-3.oe2403sp2
4.12.1-3.oe2403sp2
sleuthkit
openEuler:24.03-LTS-SP3
before 4.12.1-3.oe2403sp3
4.12.1-3.oe2403sp3
Show 9 moreShow less
Affected packages
PackageAffectedFixed
sleuthkit
Ubuntu:Pro:14.04:LTS
All versions, plus listed versions
3.2.3-2ubuntu13.2.3-2ubuntu23.2.3-2.13.2.3-2.23.2.3-2.2ubuntu0.1~esm1
None known
sleuthkit
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
4.1.3-11ubuntu24.1.3-12ubuntu14.2.0-34.2.0-3ubuntu0.1~esm1
None known
sleuthkit
Ubuntu:18.04:LTS
All versions, plus listed versions
4.4.2-14.4.2-3
None known
sleuthkit
Ubuntu:20.04:LTS
All versions, plus listed versions
4.6.5-14.6.7-14.6.7-1build1
None known
sleuthkit
Ubuntu:22.04:LTS
All versions, plus listed versions
4.10.1+dfsg-14.11.0+dfsg-14.11.1+dfsg-1
None known
sleuthkit
Ubuntu:24.04:LTS
All versions, plus listed versions
4.12.0+dfsg-14.12.1+dfsg-14.12.1+dfsg-1.1ubuntu14.12.1+dfsg-1.1ubuntu2
None known
sleuthkit
Ubuntu:25.10
All versions, plus listed versions
4.12.1+dfsg-1.1ubuntu24.12.1+dfsg-3
None known
sleuthkit
Ubuntu:26.10
All versions, plus listed versions
4.12.1+dfsg-3build14.14.0+dfsg-1
None known
sleuthkit
Ubuntu:26.04:LTS
All versions, plus listed versions
4.12.1+dfsg-34.12.1+dfsg-3build1
None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-40026 is a medium vulnerability (CVSS 4.8) in Sleuthkit The Sleuth Kit, published April 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.13%, the 2nd percentile. Fixed in sleuthkit 4.12.1-2.

References

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