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CVE-2026-120572VulnerabilityPublished

Mozilla Firefox: Schwachstelle ermöglicht nicht spezifizierten Angriff

Affects Bundesamt für Sicherheit in der Informationstechnik MozillaSource GCVE Database

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Authoritative record:CVE-2026-120572· High 8.8

Not known to be exploited · CVSS 8.8 High · fixed in 159.0.1 : patch Bundesamt für Sicherheit in der Informationstechnik Mozilla soon.

Data as of 4 Nov 2026, 12:30 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.18.8
Patch
Available – fixed in 159.0.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Nov 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 4 Nov 2026.

What to do

AI-suggested

Users and administrators should update Mozilla Firefox to version 159.0.1 or later to remediate this vulnerability. The fix is officially released and available. No additional mitigation steps are indicated by the vendor advisory.

Description

A security vulnerability identified as CVE-2026-120572 affects Mozilla Firefox. The issue involves incorrect boundary conditions in the Layout: Block and Inline component. This vulnerability has been assigned a high impact rating by Mozilla. The flaw was fixed in Firefox version 159.0.1.

References

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