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CVE-2026-24811

An improper pointer arithmetic in root-project/root at builtins/zlib/inffast.c

9.3 Critical

Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C.

This issue affects root.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
High
Availability
High

Exploit likelihood

0.35%Up 0.3 points since Jan 27, 2026
90%50%10%1%

What each source reports

CVE List Score used 9.3

An improper pointer arithmetic in root-project/root at builtins/zlib/inffast.c

Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C.

This issue affects root.

Record
CVE-2026-24811
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
Weakness
CWE-119, CWE-125, CWE-787, CWE-20
Updated
2026-11-02
EUVDEUVD-2026-4830 9.3

Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C.

This issue affects root.

Record
EUVD-2026-4830
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
Updated
2026-11-02
GitHub AdvisoriesGHSA-fm67-x2fw-2g76 9.3

Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with...

Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C.

This issue affects root.

Record
GHSA-fm67-x2fw-2g76
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/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:N/AU:Y/R:U/V:D/RE:M/U:Amber
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
NVD 9.3

Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C.

This issue affects root.

Record
CVE-2026-24811
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/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:N/AU:Y/R:U/V:D/RE:M/U:Amber
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20, CWE-119, CWE-125, CWE-787
Updated
2026-11-02
OSV 9.3

An improper pointer arithmetic in root-project/root at builtins/zlib/inffast.c

Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C.

This issue affects root.

Record
CVE-2026-24811
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
Updated
2026-11-02
OSVAZL-75354 No score

CVE-2026-24811 affecting package fltk 1.3.5-4

Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C.

This issue affects root.

Record
AZL-75354
Updated
2026-11-02
OSVAZL-75363 No score

CVE-2026-24811 affecting package openjpeg2 2.3.1-12

Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C.

This issue affects root.

Record
AZL-75363
Updated
2026-11-02
OSVAZL-75384 No score

CVE-2026-24811 affecting package openjpeg2 2.3.1-12

Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C.

This issue affects root.

Record
AZL-75384
Updated
2026-11-05

Affected products

Affected packages

Affected packages
PackageAffectedFixed
fltk
Azure Linux:2
 through 1.3.5-4 None known
openjpeg2
Azure Linux:2
 through 2.3.1-12 None known
openjpeg2
Azure Linux:3
 through 2.3.1-12 None known

History

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

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

In short

CVE-2026-24811 is a critical vulnerability (CVSS 9.3) in Root, published January 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 28th percentile. No source names a fixed version.

References

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