{"id":"CVE-2026-100804","published":"2026-09-29T13:17:45.493","lastModified":"2026-09-30T04:18:14.320","description":"Sandbox escape due to use-after-free in the Preferences: Backend component. This vulnerability was fixed in Firefox 157.","cvssScore":9.6,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","cwes":["CWE-416"],"vendors":[],"products":[],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2058647","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"This flaw allows attackers to escape the sandbox by exploiting a use-after-free vulnerability in the Preferences: Backend component, leading to potential code execution.","exploitability":"Exploitation requires specific conditions and is moderately difficult, as it involves precise timing and control over memory management.","blast_radius":"If exploited, this vulnerability could lead to full system compromise, allowing attackers to execute arbitrary code with the privileges of the affected user.","remediation":"Upgrade to Firefox 157 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","use-after-free","web","browser"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-30T08:50:35.486Z"}}