🛡️ CVE-2025-11838 — fireware

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: None.
• Integrity impact: None.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2025-11838 is classified as CWE-763: Release of Invalid Pointer or Reference. The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.

Affected software

CVE-2025-11838 is recorded against 1 package.

• fireware (from 12.0.0 up to 12.11.5)

Timeline and source

Published on 4 December 2025 and last revised on 10 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

psirt.watchguard.com
www.watchguard.com

Other advisories for this package

fireware has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-8247 (8.8 High, published 3 Jul 2026)
• CVE-2026-13375 (4.8 Medium, published 3 Jul 2026)
• CVE-2026-13728 (4.4 Medium, published 3 Jul 2026)
• CVE-2026-13054 (7.2 High, published 3 Jul 2026)
• CVE-2026-13374 (4.8 Medium, published 3 Jul 2026)
• CVE-2026-13722 (7.2 High, published 3 Jul 2026)
• CVE-2026-13053 (7.2 High, published 3 Jul 2026)
• CVE-2026-13373 (4.8 Medium, published 3 Jul 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-763: Release of Invalid Pointer or Reference) in other software:

• CVE-2026-15718 (4.3 Medium, published 14 Jul 2026)
• CVE-2026-57248 (7.8 High, published 8 Jul 2026)
• CVE-2026-53000 (7.8 High, published 24 Jun 2026)
• CVE-2026-47312 (5.5 Medium, published 19 May 2026)
• CVE-2025-65116 (5.5 Medium, published 7 Apr 2026)
• CVE-2026-56364 (published 21 Jan 2026)
• CVE-2026-22770 (6.5 Medium, published 20 Jan 2026)
• CVE-2025-14233 (9.8 Critical, published 16 Jan 2026)

Details

Affected Packages

References