High-severity remote code execution vector in MariaDB, a widely used database server; exploitable remotely via crafted GIS data and could disrupt many organizations.
CVE-2026-85746
Heap buffer overflow in MariaDB ST_AsText enabling possible remote code execution
Is CVE-2026-85746 being exploited?
Not confirmed. CVE-2026-85746 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-85746?
CVE-2026-85746 is rated Critical with a CVSS score of 9.9. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-85746?
Yes. A fix has been recorded for CVE-2026-85746. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-85746 affect?
CVE-2026-85746 affects MariaDB < 10.6.28, MariaDB < 10.11.19, MariaDB < 11.4.13, MariaDB < 11.8.9, and 2 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-85746?
Upgrade to the fixed MariaDB versions immediately; block/sanitize untrusted GIS input.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Low-privileged remote attacker can submit crafted GIS objects to trigger memory corruption and potentially achieve remote code execution.
Immediate action required
- affected>= 10.6.1 and < 10.6.28
- affected>= 10.11.1 and < 10.11.19
- affected>= 11.4.1 and < 11.4.13
- affected>= 11.8.1 and < 11.8.9
- affected>= 12.3.1 and < 12.3.3
- affected>= 13.0.1 and < 13.0.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.