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CVE-2026-85746

CRITICAL 9.9

Published 2026-10-16 · Last modified 2026-10-16

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.

ELEVATED IMPACT

Severe if exploited (CVSS 9.9), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

1.0%chance of exploitation in 30 days · 62nd percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

9.9CVSS 3.1 · CRITICAL

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityHigh

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ⚠Privileges: Requires a low-privilege account
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Mariadb

Products Server Mariadb

Weakness (CWE)

  • CWE-787: : Out-of-bounds Write

CVSS vector

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

References and research data (JSON)

Vendor product assessments

Showing 32 of 195 vendor product statements; 163 omitted. Read the full vendor advisory.

  • mariadb10.11-3:10.11.18-4.1.2.hum1@aarch64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=aarch64&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-backup-3:10.11.18-4.1.2.hum1@aarch64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=aarch64&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-client-utils-3:10.11.18-4.1.2.hum1@noarch@public-hummingbird-s390x-rpms as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=noarch&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-s390x-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-common-3:10.11.18-4.1.2.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=noarch&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-cracklib-password-check-3:10.11.18-4.1.2.hum1@s390x as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=s390x&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-s390x-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-devel-3:10.11.18-4.1.2.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-embedded-devel-3:10.11.18-4.1.2.hum1@aarch64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=aarch64&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-errmsg-3:10.11.18-4.1.2.hum1@noarch@public-hummingbird-s390x-rpms as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=noarch&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-s390x-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-gssapi-server-3:10.11.18-4.1.2.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-pam-3:10.11.18-4.1.2.hum1@aarch64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=aarch64&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-s3-engine-3:10.11.18-4.1.2.hum1@aarch64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=aarch64&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-server-3:10.11.18-4.1.2.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-server-utils-3:10.11.18-4.1.2.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=noarch&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-sphinx-engine-3:10.11.18-4.1.2.hum1@s390x as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=s390x&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-s390x-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb10.11-test-3:10.11.18-4.1.2.hum1@x86_64 as a component of Red Hat Hardened Images · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]?arch=x86_64&epoch=3&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Vendor guidance
    • workaround: Upgrade to the fixed version of MariaDB Server
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb-pam as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb-pam

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb11.8-common as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb11.8-common

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb11.8-server-galera as a component of Red Hat Enterprise Linux 10 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb11.8-server-galera

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb-server as a component of Red Hat Enterprise Linux 7 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb-server

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • galera (mariadb:10.3) as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/galera?rpmmod=mariadb:10.3

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb-embedded (mariadb:10.11) as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb-embedded?rpmmod=mariadb:10.11

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb-pam (mariadb:10.3) as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb-pam?rpmmod=mariadb:10.3

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb.src (mariadb:10.3) as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb?arch=src&rpmmod=mariadb:10.3

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb-devel as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb-devel

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb-errmsg as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb-errmsg

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb-pam as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb-pam

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb-server (mariadb:10.11) as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb-server?rpmmod=mariadb:10.11

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb as a component of Red Hat OpenStack Platform 13 (Queens) · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb.src as a component of Red Hat OpenStack Platform 13 (Queens) · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/mariadb?arch=src

    • workaround: Upgrade to the fixed version of MariaDB Server
    • none available: Affected
    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • hi/mariadb as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:oci/mariadb@sha256:319dc70f740132d3c5764c38ddc9114ca0ac7d61e89610956fbc20ad533db8d9?repository_url=registry.redhat.io/hi/mariadb

    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00
  • mariadb11.8.src as a component of Red Hat Hardened Images · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/mariadb11.8?arch=src

    Red Hat · CVE-2026-85746 · Updated 2026-10-26T11:01:20+00:00

Known Affected Software Configurations

VendorProductVersion range
MariadbMariadb≥ 10.6.1 and < 10.6.28
MariadbMariadb≥ 10.11.1 and < 10.11.19
MariadbMariadb≥ 11.4.1 and < 11.4.13
MariadbMariadb≥ 11.8.1 and < 11.8.9
MariadbMariadb≥ 12.3.1 and < 12.3.3
MariadbMariadb13.0.1

All CVSS metrics

  • CRITICAL 9.9 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CRITICAL 9.9 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

Patches & mitigations

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS