Firefox/Thunderbird Graphics Use-After-Free (pre-159)
CVE-2026-117980 Published on October 27, 2026
Use-after-free in the Graphics component
Use-after-free in the Graphics component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
Vulnerability Analysis
CVE-2026-117980 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-117980 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-117980
stack.watch emails you whenever new vulnerabilities are published in Mozilla Firefox or Mozilla Thunderbird. Just hit a watch button to start following.
Affected Versions
Mozilla Firefox:- Version 153.6, <= 153.* is unaffected.
- Version 159, <= * is unaffected.
- Version 153.6, <= 153.* is unaffected.
- Version 159, <= * is unaffected.