VulnerabilityPublished 27 Oct 2026

CVE-2026-117946: Incorrect Boundary Conditions

Source GCVE Database

Authoritative record:CVE-2026-117946· High

Not known to be exploited.

Data as of 27 Oct 2026, 17:16 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-49f3-78q6-q23f

What to do

AI-suggested

A fix for this vulnerability is available in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6. Users and administrators should update to these versions or later to remediate the issue. There are no indications that additional mitigation steps are required beyond applying the official update.

Description

CVE-2026-117946 is a high-impact vulnerability involving incorrect boundary conditions in the JavaScript Engine component of Firefox. This flaw was addressed and fixed in Firefox 159 and Firefox ESR versions 115.44 and 153.6. The issue could potentially lead to security problems if exploited, but no known exploits in the wild have been reported. Users are advised to update to the fixed versions to mitigate the risk.

Impact

The vulnerability has a high impact rating according to the Mozilla advisory, indicating it could allow an attacker to compromise the security of the affected Firefox versions. The exact nature of the impact is not detailed, but incorrect boundary conditions in a JavaScript engine typically risk memory corruption or similar issues that could lead to privilege escalation or code execution.

Summary

This vulnerability, identified as CVE-2026-117946, involves incorrect boundary conditions in the JavaScript Engine component of Firefox. Boundary condition errors can lead to memory safety issues or logic errors that may be exploitable. Mozilla fixed this vulnerability in Firefox 159 and the corresponding ESR releases 115.44 and 153.6. The advisory classifies the impact as high but does not provide specific exploitation details. No active exploitation has been reported.

References

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