Medium severity · published Oct 16, 2026
CVE-2026-85745
MariaDB: Out-of-bound buffer read on in `ST_Area` of a multipolygon.
4.3
CVSS
0.5%
EPSS
No
On KEV
Description
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, ST_Area reads beyond the allocated buffer when processing invalid WKB for a MultiPolygon because the multi-polygon parser advances past a nested geometry header without first verifying enough input remains. A low-privileged remote attacker can supply malformed spatial data to disclose memory useful for bypassing ASLR as part of a multi-vulnerability chain. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
server · MariaDB
>= 10.6.1, < 10.6.28; >= 10.11.1, < 10.11.19; >= 11.4.1, < 11.4.13; >= 11.8.1, < 11.8.9; >= 12.3.1, < 12.3.3; >= 13.0.1, < 13.0.2 · source: vendor
MA
Mariadb · Mariadb
10.6.1 before 10.6.28; 10.11.1 before 10.11.19; 11.4.1 before 11.4.13; 11.8.1 before 11.8.9; 12.3.1 before 12.3.3; 13.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-85745
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85745
Patch
https://github.com/MariaDB/server/commit/2bf355e361db85153fdfba7b8a0f0d114d6a26ce
Release Notes
https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
Release Notes
https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28
Release Notes
https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13
Release Notes
https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9
Release Notes
https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3
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