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VulnerabilityPublished

CVE-2026-124854: Mozilla Firefox · Privilege escalation in the DOM: Navigation component

Affects Mozilla FirefoxSource CVE Database V5

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Not known to be exploited.

Data as of 10 Nov 2026, 14:18 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

AI-suggested

A fix for this vulnerability is available in Firefox 160 and Firefox ESR 153.7. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.

Description

CVE-2026-124854 is a privilege escalation vulnerability in the DOM Navigation component of Mozilla Firefox. It was fixed in Firefox 160 and Firefox ESR 153.7. The vulnerability allows an attacker to escalate privileges within the browser context, potentially leading to unauthorized actions. The issue was assigned a high impact rating by Mozilla.

References

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