MariaDB up to 13.0.1 GIS ST_AsText buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k1.66+

Summaryinfo

A vulnerability labeled as critical has been found in MariaDB up to 13.0.1. The impacted element is the function ST_AsText of the component GIS Handler. Such manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2026-85746. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in MariaDB up to 13.0.1 and classified as critical. Affected by this issue is the function ST_AsText of the component GIS Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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_AsText can write beyond an allocated output buffer when converting deeply nested GeometryCollections because recursive WKT serialization does not account for bytes consumed or reserve sufficient space. A low-privileged remote attacker can submit a specially crafted GIS object to corrupt memory and potentially achieve code execution when combined with another vulnerability. 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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-85746 since 09/04/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available.

Upgrading to version 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3 or 13.0.2 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.9
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: MariaDB 10.6.28/10.11.19/11.4.13/11.8.9/12.3.3/13.0.2

Timelineinfo

09/04/2026 CVE reserved
10/16/2026 +42 days Advisory disclosed
10/16/2026 +0 days VulDB entry created
10/16/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-85746 (🔒)
GCVE (CVE): GCVE-0-2026-85746
GCVE (VulDB): GCVE-100-421340

Entryinfo

Created: 10/16/2026 18:46
Changes: 10/16/2026 18:46 (28), 10/16/2026 18:47 (37)
Complete: 🔍
Cache ID: 216::103

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