Riskcovery

CVE-2026-109757

Sandbox escape due to race condition in the Networking component

State
Published
Severity
8.3 High
Published
Oct 13, 2026
Updated
Oct 15, 2026
Reserved
Oct 13, 2026

Read the record on cve.org

Description

Sandbox escape due to race condition in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

Scores

CVSSScoreVectorSource
3.18.3 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:HCISA-ADP

Weaknesses

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Affected Products

ProductVersions
FirefoxMozilla
  • 153.5 through 153.*Not affected
  • 158 and laterNot affected
ThunderbirdMozilla
  • 153.5 through 153.*Not affected
  • 158 and laterNot affected

References

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