CVE-2026-81267
A vulnerability has been discovered in Mozilla Firefox for iOS. It allows an attacker to cause a security policy bypass.
CSIRTS triage
- What
- Security policy bypass vulnerability in Firefox for iOS.
- Who is affected
- iOS users running affected versions of Mozilla Firefox for iOS.
- Urgency
- Severity unknown; policy bypass may affect sandbox or security feature integrity.
- Action
- Update Firefox for iOS to the latest available version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all EPSS-scored CVEs.
Advisory coverage (3)
- unknownMozilla Products Multiple Vulnerabilitieshkcert · 2026-09-02
- unknownVulnerability in Mozilla Firefox for iOS (September 01, 2026)cert-fr-avis · 2026-09-01
- mediumCVE-2026-81267: A malicious webpage could stall a popup's cross-origin navigation after commit, causing the ad…nvd · 2026-08-31
External references
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[](https://www.csirts.com/cve/CVE-2026-81267)