Red Hat Security Advisory: firefox security update
Affects Red Hat firefoxSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited.
Data as of 3 Nov 2026, 23:50 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
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 to Firefox ESR version 115.12.0 is available from Red Hat and should be applied to affected systems. Red Hat advises ensuring all previously released errata relevant to your system are applied before updating. This update fixes the identified vulnerabilities and no further immediate action is required once applied.
Description
Red Hat has released 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 and affects various Red Hat Enterprise Linux 9 variants. Users are advised to apply this update to mitigate these vulnerabilities.
References
- access.redhat.com/errata/RHSA-2024:3955 (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_3955.json (opens in a new tab)