VulnerabilityPublished 27 Oct 2026

CVE-2026-117969: Invalid Pointer

Source GCVE Database

Authoritative record:CVE-2026-117969· High

Not known to be exploited.

Data as of 27 Oct 2026, 17:12 UTC

Severity

High

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

Exploitation evidence

Disclosed: evidence found.
CVE published 27 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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-jg44-j256-vc72

What to do

AI-suggested

Users and administrators should update Firefox to version 159 or later, or Firefox ESR 153.6 or later, where this vulnerability has been fixed. Applying these official patches fully mitigates the risk associated with this vulnerability.

Description

CVE-2026-117969 is a high-impact vulnerability involving an invalid pointer in the Just-In-Time (JIT) component of the JavaScript Engine in Firefox. This flaw was addressed and fixed in Firefox version 159 and Firefox ESR 153.6. The vulnerability could potentially lead to memory safety issues, but no exploitation in the wild has been reported.

Impact

The vulnerability poses a high impact due to the invalid pointer in the JIT component, which could lead to memory corruption or related security issues. However, there is no evidence of active exploitation in the wild. The flaw could potentially be leveraged to compromise the security of Firefox users if exploited.

Summary

This vulnerability concerns an invalid pointer error within the JavaScript Engine's JIT component in Firefox. The issue was identified and resolved by Mozilla in Firefox 159 and Firefox ESR 153.6 as part of a broader set of high-impact security fixes. The advisory does not provide detailed exploitation techniques or specific attack vectors but classifies the impact as high. No known exploits in the wild have been reported for this vulnerability.

References

Community reviews

Loading reviews…