Bundesamt für Sicherheit in der Informationstechnik Amazon · Mozilla Produkte (Thunderbird, Firefox ESR und Firefox): Mehrere Schwachstellen
Affects Bundesamt für Sicherheit in der Informationstechnik AmazonSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 9.8 Critical.
Data as of 9 Nov 2026, 12:51 UTC
Thin evidence
One scorer or none| CISA-ADP | CVSS 3.1 | 9.8 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 20 Oct 2026
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 9 Nov 2026.
What to do
AI-suggested
Apply the official security updates Firefox 158.0.1 and Firefox ESR 153.5.1 provided by Mozilla. These updates include fixes for all identified vulnerabilities, including the critical cryptographic block list update. No additional mitigation is required beyond installing these patches.
Description
Multiple security vulnerabilities affecting Mozilla products including Firefox, Firefox ESR, and Thunderbird have been addressed. Notably, a high-impact cryptographic issue involving compromised intermediate eMudhra certificates was mitigated by updating the OneCRL block list. Other vulnerabilities include an incorrect boundary condition in the SVG component (high impact), uninitialized memory in the Audio/Video cubeb component (moderate impact), and a denial-of-service in the PDF Viewer component (low impact). Fixes are available in Firefox 158.0.1 and Firefox ESR 153.5.1.
References
- wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-4064.json (opens in a new tab)
- wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-4064 (opens in a new tab)
- mozilla.org/en-US/security/advisories/mfsa2026-111/ (opens in a new tab)
- mozilla.org/en-US/security/advisories/mfsa2026-112/ (opens in a new tab)
- mozilla.org/en-US/security/advisories/mfsa2026-113/ (opens in a new tab)
- mozilla.org/en-US/security/advisories/mfsa2026-114/ (opens in a new tab)
- mozilla.org/en-US/security/advisories/mfsa2026-115/ (opens in a new tab)
- security-tracker.debian.org/tracker/DSA-6573-1 (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-500450.html (opens in a new tab)
- mozilla.org/en-US/security/advisories/mfsa2026-116/ (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-500449.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2026/10/msg00041.html (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-500451.html (opens in a new tab)
- linux.oracle.com/errata/ELSA-2026-500496.html (opens in a new tab)
- alas.aws.amazon.com/AL2/ALAS2-2026-4037.html (opens in a new tab)
- alas.aws.amazon.com/AL2/ALAS2FIREFOX-2026-068.html (opens in a new tab)
- lists.debian.org/debian-security-announce/2026/msg00503.html (opens in a new tab)
- lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/CDHSLQ72JRJZHSUCFYR4KETGIEDZAIHF/ (opens in a new tab)
- lists.debian.org/debian-lts-announce/2026/10/msg00057.html (opens in a new tab)
- support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/39437 (opens in a new tab)