CRITICAL🇵🇱 Wersja polska

CVE-2026-84119

CVSS 9.6v3.1pub. 2026-09-01upd. 2026-09-02

Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

  • Mozilla Firefox

    APP
    Mozilla
    < 115.40.0116.0 – 140.15.0 (excl.)141.0.0 – 153.2.0 (excl.)154.0.0 – 155.0.0 (excl.)

  • Mozilla Thunderbird

    APP
    Mozilla
    < 140.15.0141.0 – 153.2.0 (excl.)154.0 – 155.0 (excl.)
🔵
CHECK WITH VENDOR
No clear patch data available. Check vendor references.
Tags
Memory
CWE
References

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Sandbox escape due to use-after-free in the DOM: Security component. This vulnerability was fixed in Firefox 1...