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VulnerabilityPublished

CVE-2026-117978: Mozilla Firefox · Incorrect boundary conditions in the Graphics component

Affects Mozilla FirefoxSource CVE Database V5

0

Not known to be exploited.

Data as of 27 Oct 2026, 17:24 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

AI-suggested

Users and administrators should update Firefox to version 159 or later, or to Firefox ESR versions 115.44 or 153.6 or later, to remediate this vulnerability. The vendor has provided an official fix, and applying these updates fully mitigates the risk.

Description

CVE-2026-117978 is a vulnerability in the Graphics component of Mozilla Firefox caused by incorrect boundary conditions. This flaw was addressed and fixed in Firefox version 159 and Firefox ESR versions 115.44 and 153.6. The vulnerability has a high impact rating according to the Mozilla advisory. No known exploits in the wild have been reported.

References

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