Red Hat Security Advisory: thunderbird security update
Affects Red HatSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · public exploit available (Exploit-DB) · 70% EPSS : upgrade to 115.11.0 as a priority.
Data as of 25 Oct 2026, 19:02 UTC
Likely to be exploited
70.6% EPSS · High severity · No CVSS score from NVD or the CNA
- EPSS
- 70.6% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 115.11.0
Exploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 20 May 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
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
Timeline
CVE published
on cve.org
, t = 0
First Exploit-DB entry (opens in a new tab)
Firefox ESR 115.11 - PDF.js Arbitrary JavaScript execution
, 337 days after disclosure
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 2026-10-25.
What to do
Upgrade Red Hat to 115.11.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Product Security Red Hat | Affected
| Fixed in
|
AI-suggested
A security update to Thunderbird version 115.11.0 is available and should be applied to affected systems. Red Hat advises ensuring all previously released errata relevant to the system are applied before updating. Detailed update instructions are available at https://access.redhat.com/articles/11258. No indication of partial or temporary mitigations is provided; applying the official update fully addresses these vulnerabilities.
Description
Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 115.11.0. Security Fix(es): * firefox: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367) * firefox: IndexedDB files retained in private browsing mode (CVE-2024-4767) * firefox: Potential permissions request bypass via clickjacking (CVE-2024-4768) * firefox: Cross-origin responses could be distinguished between script and non-script content-types (CVE-2024-4769) * firefox: Use-after-free could occur when printing to PDF (CVE-2024-4770) * firefox: Memory safety bugs fixed in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11 (CVE-2024-4777) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
References
- access.redhat.com/errata/RHSA-2024:2904 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2280382 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2280383 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2280384 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2280385 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2280386 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2280387 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_2904.json (opens in a new tab)