CVE-2026-85748Public exploitNetwork attack vectorHinoki check available

Server crash via stale cursor-array references

Published Oct 16, 2026 · Updated Oct 16, 2026

MariaDB Server 12.3.1 through 12.3.2 and 13.0.1 allows remote authenticated users to crash the server via SYS_REFCURSOR use-after-free. Cursor-array growth relocates elements while sp_instr_copen_by_ref::exec_core() retains pointers to their freed locations during nested routine execution. Low-privileged access is sufficient; remote code execution requires another vulnerability in the exploitation chain.

CVSS severity9.9
Critical
EPSS probability0.55%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

MariaDB Server 12.3.1 through 12.3.2 and 13.0.1 allows remote authenticated users to crash the server via SYS_REFCURSOR use-after-free. Cursor-array growth relocates elements while sp_instr_copen_by_ref::exec_core() retains pointers to their freed locations during nested routine execution. Low-privileged access is sufficient; remote code execution requires another vulnerability in the exploitation chain.

The record

CVE
CVE-2026-85748
Published
Oct 16, 2026
Updated
Oct 16, 2026
Vendor
MariaDB
Product
MariaDB Server
Classifications
CWE-416, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 12.3.1, < 12.3.3
  2. Affected versionversion=>= 13.0.1, < 13.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MariaDB · MariaDB Serverversion=>= 12.3.1, < 12.3.3; version=>= 13.0.1, < 13.0.2

Published CVSS scores

9.9MariaDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-416Use After Free
T1210Exploitation of Remote Services

Public exploit references

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Technologies

Your stack

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Your stack

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