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CVE PROGRAM SOURCE RECORD8.3 High

CVE-2026-109757

Sandbox escape due to race condition in the Networking component

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mozilla Firefox

  • 153.5 to ≤ 153.*unaffected
  • 158 to ≤ *unaffected

Mozilla Thunderbird

  • 153.5 to ≤ 153.*unaffected
  • 158 to ≤ *unaffected

References