CVE-2026-107815

HIGH 8.5

MariaDB: one byte OOB write in DOS tables of the CONNECT engine

CVSS Score

8.5

EPSS Score

0.0%

EPSS Percentile

0th

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, the CONNECT engine's DOS table type used an incorrect boundary check that permitted a one-byte null write beyond a stack buffer at an attacker-controlled offset. An authenticated user able to use the CONNECT engine could cause a crash and potentially remote code execution. 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.

CWE	CWE-787
Vendor	mariadb
Product	server
Published	Oct 9, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

MariaDB / server

>= 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

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/MariaDB/server/security/advisories/GHSA-4wgx-ffg9-jrwq github.com: https://github.com/MariaDB/server/commit/b369925f6855d3e1f0ebcf453492724b99fda6f8 github.com: https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19 github.com: https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28 github.com: https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13 github.com: https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9 github.com: https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3 github.com: https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2 jira.mariadb.org: https://jira.mariadb.org/browse/MDEV-40637