CVE-2026-107821

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.20% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 68.0% of scored records. A rank, not a probability.

NVD base score

8.0 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-10-14.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-09 17:27Z20 DAYS AGO

Last updated

2026-10-09 17:42Z20 DAYS AGO

Reserved

2026-10-08

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.0)

CNA CVSS vector

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

Weaknesses

• CWE-1285Improper Validation of Specified Index, Position, or Offset in InputBase
• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

205b5bbd6e5cde11bc82d546b8e0979fd78f1b7ddeeea85a78a83ef7243aa9a6

• github.comhttps://github.com/MariaDB/server/security/advisories/GHSA-c4gx-34mg-95q5x_refsource_CONFIRM
• github.comhttps://github.com/MariaDB/server/commit/3b1c2e58abab5571bec4ff52773ddc75b1738da9x_refsource_MISC
• github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-10.11.19x_refsource_MISC
• github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-10.6.28x_refsource_MISC
• github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-11.4.13x_refsource_MISC
• github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-11.8.9x_refsource_MISC
• github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-12.3.3x_refsource_MISC
• github.comhttps://github.com/MariaDB/server/releases/tag/mariadb-13.0.2x_refsource_MISC
• jira.mariadb.orghttps://jira.mariadb.org/browse/MDEV-40571x_refsource_MISC