CVE-2026-4738

GDAL Bundled zlib (inftree9.c) Pointer Offset Optimization Undefined Behavior Allows Heap Corruption or Remote Code Execution

State: Published
Severity: 9.4 Critical
Published: Mar 24, 2026
Updated: Mar 24, 2026
Reserved: Mar 24, 2026

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Description

Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in OSGeo gdal (frmts/zlib/contrib/infback9 modules). This vulnerability is associated with program files inftree9.C‎.

This issue affects gdal: before 3.11.0.

Scores

CVSS	Score	Vector	Source
4.0	9.4 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/S:P/AU:Y/R:U/V:C/RE:L/U:Amber	GovTech CSG

Weaknesses

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

Affected Products

Product	Versions
gdalOSGeo	before 3.11.0Affected

References

https://github.com/OSGeo/gdal/pull/12244patch

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