Riskcovery

CVE-2026-92071

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component

State
Published
Severity
9.6 Critical
Published
Sep 15, 2026
Updated
Sep 22, 2026
Reserved
Sep 15, 2026

Read the record on cve.org

Description

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

Scores

CVSSScoreVectorSource
3.19.6 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HCISA-ADP

Weaknesses

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

Affected Products

ProductVersions
FirefoxMozilla
  • 153.3 through 153.*Not affected
  • 156 and laterNot affected
ThunderbirdMozilla
  • 153.3 through 153.*Not affected
  • 156 and laterNot affected

References

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