Critical severity · published Mar 24, 2026
CVE-2026-4738
GDAL Bundled zlib (inftree9.c) Pointer Offset Optimization Undefined Behavior Allows Heap Corruption or Remote Code Execution
9.4
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GD
gdal · OSGeo
before 3.11.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-4738
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-4738
github.com
https://github.com/OSGeo/gdal/pull/12244
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