Red Hat Security Advisory: thunderbird security update
Affects Red Hat thunderbirdSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · fixed in Red Hat package updates : patch Red Hat thunderbird soon.
Data as of 3 Nov 2026, 23:44 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- Patch
- Available – fixed in 115.12.1
Exploitation evidence
Disclosed: evidence found.
CVE published 20 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
Red Hat has released Thunderbird version 115.12.1 containing fixes for all listed vulnerabilities. Users of affected Red Hat Enterprise Linux 8.4 variants should apply the update promptly. All running instances of Thunderbird must be restarted for the update to take effect. No additional mitigations are specified or required beyond applying this official update.
Description
Multiple security vulnerabilities affecting Mozilla Thunderbird have been addressed in the update to version 115.12.1. These include use-after-free bugs in networking and JavaScript object transplant, timing attacks leaking external protocol handlers, sandbox bypasses, cross-origin image leaks, and memory corruption issues. The update is provided by Red Hat for their Enterprise Linux 8.4 variants and requires restarting Thunderbird to apply the fixes.
References
- access.redhat.com/errata/RHSA-2024:4003 (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_4003.json (opens in a new tab)