🛡️ CVE-2026-15718 — firefox

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. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

CVSS metrics in full

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

• 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: Required — someone has to click, open or visit something.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: None.
• Availability impact: None.

Weakness class

CVE-2026-15718 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-2026-15718 is recorded against 1 package.

• firefox (fixed in 152.0.6)

Timeline and source

Published on 14 July 2026 and last revised on 22 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

bugzilla.mozilla.org
www.mozilla.org
www.mozilla.org
www.mozilla.org

Other advisories for this package

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

• MGASA-2026-0325 (published 7 Aug 2026)
• CGA-r72j-7q7m-f2vx (published 30 Jul 2026)
• CGA-8cmc-mjq4-wxvj (published 30 Jul 2026)
• CGA-7vrr-xf3x-xg6q (published 30 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-2026-57248 (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)
• CVE-2025-48768 (6.5 Medium, published 1 Jan 2026)

Details

Affected Packages

References