CVE-2026-117989: Mozilla Firefox · Use-after-free in the Graphics Component
Affects Mozilla FirefoxSource CVE Database V5
Not known to be exploited.
Data as of 27 Oct 2026, 14:44 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 27 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Mozilla Firefox | Affected
| Fixed in
|
AI-suggested
Users should update to Firefox 159 or later, or Firefox ESR 153.6 or later, where this vulnerability has been fixed. Applying these official updates fully mitigates the risk. No additional mitigation steps are required beyond applying the vendor's patch.
Description
CVE-2026-117989 is a use-after-free vulnerability in the Graphics component of Mozilla Firefox. This security flaw was addressed and fixed in Firefox version 159 and Firefox ESR 153.6. The vulnerability is considered high impact due to the potential risks associated with use-after-free bugs. No known exploits in the wild have been reported for this issue.