CVE-2026-4738 PUBLISHED

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

Assigner: GovTech CSG
Reserved: 24.03.2026 Published: 24.03.2026 Updated: 24.03.2026

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.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 9.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	None
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	OSGeo
Product	gdal
Versions	Default: affected affected from 0 to 3.11.0 (excl.)

Credits

TITAN Team (titancaproject@gmail.com) reporter

References

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

Problem Types

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