VulnerabilityPublished 10 Nov 2026

CVE-2026-124854: Privilege Escalation

Source GCVE Database

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Authoritative record:CVE-2026-124854· High

Not known to be exploited.

Data as of 10 Nov 2026, 18:03 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

Disclosed: evidence found.
CVE published 10 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-h3vc-w6pw-xvjc

What to do

AI-suggested

Users and administrators should update Firefox to version 160 or later, or Firefox ESR 153.7 or later, to remediate this vulnerability. The fix is officially released and available. No additional mitigation steps are required beyond applying the update.

Description

CVE-2026-124854 is a privilege escalation vulnerability in the DOM Navigation component of Firefox. This flaw was addressed and fixed in Firefox version 160 and Firefox ESR 153.7. The vulnerability could allow an attacker to escalate privileges within the browser context. It is one of several high-impact security issues resolved in the Firefox 160 release.

Impact

The vulnerability allows an attacker to escalate privileges within the browser environment, potentially leading to unauthorized actions or access. Given the high impact rating by Mozilla, exploitation could compromise the security boundaries enforced by the browser, affecting user security and privacy.

Summary

This vulnerability involves privilege escalation within the Document Object Model (DOM) Navigation component in Firefox. The issue was identified and fixed by Mozilla in Firefox 160 and Firefox ESR 153.7. It is classified with high impact, indicating significant security concerns if exploited. The Mozilla advisory lists this vulnerability alongside multiple other high-impact bugs fixed in the same release cycle, underscoring the critical nature of the update.

References

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