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CVE-2025-53817

GHSL-2025-059 - 7-Zip - Null pointer array write attempt in NArchive::NCom::CHandler::GetStream

5.5 MediumFix available

7-Zip is a file archiver with a high compression ratio. 7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.71%Up 0.7 points since Jul 18, 2025
90%50%10%1%

What each source reports

CVE List Score used 5.5

GHSL-2025-059 - 7-Zip - Null pointer array write attempt in NArchive::NCom::CHandler::GetStream

7-Zip is a file archiver with a high compression ratio. 7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.

Record
CVE-2025-53817
CVSS 4.0
5.5 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
Weakness
CWE-476
Updated
2026-11-02
EUVDEUVD-2025-21790 5.5

7-Zip is a file archiver with a high compression ratio. 7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.

Record
EUVD-2025-21790
CVSS 4.0
5.5 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
Updated
2026-11-02
NVD 5.5

7-Zip is a file archiver with a high compression ratio. 7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.

Record
CVE-2025-53817
CVSS 4.0
5.5 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/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
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-476
Updated
2026-11-02
OSV 5.5

GHSL-2025-059 - 7-Zip - Null pointer array write attempt in NArchive::NCom::CHandler::GetStream

7-Zip is a file archiver with a high compression ratio. 7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.

Record
CVE-2025-53817
CVSS 4.0
5.5 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
Weakness
CWE-476
Updated
2026-11-02
OSVDEBIAN-CVE-2025-53817 7.5

7-Zip is a file archiver with a high compression ratio. 7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.

Record
DEBIAN-CVE-2025-53817
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2025-53817 5.5

7-Zip is a file archiver with a high compression ratio. 7-Zip supports extracting from Compound Documents. Prior to version 25.0.0, a null pointer dereference in the Compound handler may lead to denial of service. Version 25.0.0 contains a fix cor the issue.

Record
UBUNTU-CVE-2025-53817
CVSS 4.0
5.5 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
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OSVopenSUSE-SU-2025:15523-1 No score

7zip-25.01-1.1 on GA media

These are all security issues fixed in the 7zip-25.01-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:15523-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:20273-1 No score

Security update for 7zip

This update for 7zip fixes the following issues:

  • Update to 25.01 (boo#1249130)

    • The code for handling symbolic links has been changed to provide greater security when extracting files from archives
    • Command line switch -snld20 can be used to bypass default security checks when creating symbolic links.

  • Update to 25.00:

    • bzip2 compression speed was increased by 15-40%.
    • deflate (zip/gz) compression speed was increased by 1-3%.
    • improved support for zip, cpio and fat archives.
    • CVE-2025-53816: Fixed input manipulation leading to heap buffer overflow (bsc#1246706)
    • CVE-2025-53817: Fixed null pointer dereference leading to denial of service (bsc#1246707)
Record
openSUSE-SU-2026:20273-1
Updated
2026-11-02
OSVSUSE-SU-2025:3791-1 No score

Security update for p7zip

This update for p7zip fixes the following issues:

  • CVE-2022-47069: heap buffer overflow in ZipIn.cpp file (bsc#1209648).
  • CVE-2025-53817: null pointer dereference may lead to denial of service (bsc#1246707).
Record
SUSE-SU-2025:3791-1
Updated
2026-11-02
OSVSUSE-SU-2026:20592-1 No score

Security update for 7zip

This update for 7zip fixes the following issues:

  • Update to 25.01 (boo#1249130)

    • The code for handling symbolic links has been changed to provide greater security when extracting files from archives
    • Command line switch -snld20 can be used to bypass default security checks when creating symbolic links.

  • Update to 25.00:

    • bzip2 compression speed was increased by 15-40%.
    • deflate (zip/gz) compression speed was increased by 1-3%.
    • improved support for zip, cpio and fat archives.
    • CVE-2025-53816: Fixed input manipulation leading to heap buffer overflow (bsc#1246706)
    • CVE-2025-53817: Fixed null pointer dereference leading to denial of service (bsc#1246707)
Record
SUSE-SU-2026:20592-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
7zip
Debian:12
 before 22.01+really25.01+dfsg-0+deb12u1, plus listed versions
22.01+dfsg-10~exp122.01+dfsg-822.01+dfsg-8+deb12u122.01+dfsg-9
22.01+really25.01+dfsg-0+deb12u1
7zip
Debian:13
 before 25.00+dfsg-1, plus listed versions
24.09+dfsg-8
25.00+dfsg-1
7zip
Debian:14
 before 25.00+dfsg-1, plus listed versions
24.09+dfsg-8
25.00+dfsg-1
p7zip
Debian:12
 before 16.02+really25.01+dfsg-0+deb12u1, plus listed versions
16.02+dfsg-8
16.02+really25.01+dfsg-0+deb12u1
p7zip
Debian:13
 before 16.02+transitional.1
16.02+transitional.1
p7zip
SUSE:Linux Enterprise Module for Basesystem 15 SP6
From an advisory covering 3 CVEs
 before 16.02-150200.14.15.1
16.02-150200.14.15.1
p7zip
SUSE:Linux Enterprise Module for Basesystem 15 SP7
From an advisory covering 3 CVEs
 before 16.02-150200.14.15.1
16.02-150200.14.15.1
p7zip
openSUSE:Leap 15.6
From an advisory covering 3 CVEs
 before 16.02-150200.14.15.1
16.02-150200.14.15.1
7zip
SUSE:Linux Enterprise Server 16.0
From an advisory covering 2 CVEs
 before 25.01-160000.1.1
25.01-160000.1.1
7zip
SUSE:Linux Enterprise Server for SAP applications 16.0
From an advisory covering 2 CVEs
 before 25.01-160000.1.1
25.01-160000.1.1
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Affected packages
PackageAffectedFixed
7zip
Ubuntu:Pro:22.04:LTS
 All versions, plus listed versions
21.03~beta+dfsg-621.04~beta+dfsg-121.06+dfsg-121.07+dfsg-121.07+dfsg-221.07+dfsg-321.07+dfsg-421.07+dfsg-4ubuntu0.1~esm1
 None known
7zip
Ubuntu:Pro:24.04:LTS
 All versions, plus listed versions
23.01+dfsg-323.01+dfsg-723.01+dfsg-823.01+dfsg-1123.01+dfsg-11ubuntu0.1~esm1
 None known
7zip
openSUSE:Tumbleweed
From an advisory covering 2 CVEs
 before 25.01-1.1
25.01-1.1
7zip
openSUSE:Leap 16.0
From an advisory covering 2 CVEs
 before 25.01-160000.1.1
25.01-160000.1.1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, NVD, OSV

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

In short

CVE-2025-53817 is a medium vulnerability (CVSS 5.5) in 7-zip, published July 17, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.71%, the 53rd percentile. Fixed in 7zip 22.01+really25.01+dfsg-0+deb12u1.

References

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