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Vulnerability in Mozilla Firefox (July 1, 2026)

unknownCVE-2026-14241
A vulnerability has been discovered in Mozilla Firefox. It allows an attacker to cause remote arbitrary code execution.

CSIRTS triage

vendor: Mozillaproduct: FirefoxRemote code execution
What
A vulnerability in Mozilla Firefox allows for remote arbitrary code execution.
Who is affected
Users of Mozilla Firefox are affected.
Urgency
Immediate action is required due to the severity of the remote code execution risk.
Action
Update Mozilla Firefox to the latest version to address this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CERT-FR Avis de sécurité (FR · national-cert · site)
Severity
unknown
Published
2026-07-01
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0820/

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-14241coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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