Red Hat Security Advisory: firefox security update
Affects Red Hat firefoxSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · fixed in Red Hat package updates : patch Red Hat firefox soon.
Data as of 3 Nov 2026, 23:50 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- Patch
- Available – fixed in 115.12.0
Exploitation evidence
Disclosed: evidence found.
CVE published 17 Jun 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 3 Nov 2026.
What to do
AI-suggested
A security update is available that upgrades Firefox to version 115.12.0 ESR, which fixes all listed vulnerabilities. Users should apply this update promptly and restart Firefox for the fixes to take effect. Detailed update instructions are available from Red Hat. No additional mitigations are specified or required beyond applying the official update.
Description
Red Hat has issued a security update for Mozilla Firefox, upgrading it to version 115.12.0 ESR. This update addresses multiple security vulnerabilities including use-after-free bugs, sandbox bypass, timing attacks leaking external protocol handlers, cross-origin image leaks, and memory corruption issues. The update is rated as Important by Red Hat Product Security. Users must restart Firefox after applying the update for changes to take effect.
References
- access.redhat.com/errata/RHSA-2024:3954 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2291394 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2291395 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2291396 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2291397 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2291399 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2291400 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2291401 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_3954.json (opens in a new tab)