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CVE-2026-100756VulnerabilityPublished Updated

Bundesamt für Sicherheit in der Informationstechnik Amazon · Mozilla Firefox, Firefox ESR und Thunderbird: Mehrere Schwachstellen

Affects Bundesamt für Sicherheit in der Informationstechnik AmazonSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-100756· High 8.1

Not known to be exploited · CVSS 8.1 High · fixed in 153.4 : patch Bundesamt für Sicherheit in der Informationstechnik Amazon soon.

Data as of 9 Nov 2026, 13:03 UTC

CVSS 3.1 base score
8.1High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 153.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

Affected software

ProductAffectedFixed in
Bundesamt für Sicherheit in der Informationstechnik AmazonAffected
  • <153.4
  • <157
  • <115.42
  • <140.17
Fixed in
  • 153.4
  • 157
  • 115.42
  • 140.17

AI-suggested

Users should update to Firefox ESR version 153.4 or later to remediate these vulnerabilities. Mozilla has officially fixed these issues in this release. No additional mitigation actions are required beyond applying the update.

Description

Multiple high-impact security vulnerabilities have been fixed in Mozilla Firefox ESR, including use-after-free bugs, sandbox escapes, information disclosure, and privilege escalation issues across various components such as DOM, JavaScript WebAssembly, Graphics, and Audio/Video. These vulnerabilities affect Firefox ESR versions prior to 153.4 and have been addressed in the Firefox ESR 153.4 release.

References

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