Riskcovery

CVE-2026-7321

Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component

State
Published
Severity
9.6 Critical
Published
Apr 28, 2026
Updated
Apr 30, 2026
Reserved
Apr 28, 2026

Read the record on cve.org

Description

Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, and Thunderbird 140.10.1.

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-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Affected Products

ProductVersions
FirefoxMozilla
  • 140.10.1 through 140.*Not affected
  • 150 and laterNot affected
ThunderbirdMozilla
  • 140.10.1 through 140.*Not affected
  • 150 and laterNot affected

References

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