Red Hat Security Advisory: thunderbird security update
Affects Red Hat thunderbirdSource GCVE Database
Mentioned vulnerabilities
Public exploit available (Exploit-DB) · 70% EPSS : upgrade the Red Hat redhat/thunderbird package to 115.11.0 as a priority.
Data as of 26 Oct 2026, 11:42 UTC
Likely to be exploited
70.6% EPSS · Medium 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 23 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
, 334 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 26 Oct 2026.
What to do
Upgrade the Red Hat redhat/thunderbird package to 115.11.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Red Hatredhat/thunderbirdpkg:rpm/redhat/thunderbirdOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A security update to Thunderbird version 115.11.0 is available and should be applied promptly. All running instances of Thunderbird must be restarted for the update to take effect. This update addresses all listed vulnerabilities. No additional mitigation steps are indicated by the vendor advisory.
Description
Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 115.11.0. Security Fix(es): * Mozilla: Arbitrary JavaScript execution in PDF.js (CVE-2024-4367) * Mozilla: IndexedDB files retained in private browsing mode (CVE-2024-4767) * Mozilla: Potential permissions request bypass via clickjacking (CVE-2024-4768) * Mozilla: Cross-origin responses could be distinguished between script and non-script content-types (CVE-2024-4769) * Mozilla: Use-after-free could occur when printing to PDF (CVE-2024-4770) * Mozilla: 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-2024:3338 (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_3338.json (opens in a new tab)