CVE-2026-6756

7.5

Mozilla · Firefox for Android

A mitigation bypass vulnerability exists in Firefox for Android, potentially allowing attackers to circumvent security protections.

Executive summary

A mitigation bypass vulnerability in Firefox for Android allows for the circumvention of security controls, posing a significant risk to user data and browser integrity.

Vulnerability

The vulnerability is a mitigation bypass issue within the browser, which can be triggered by an unauthenticated remote attacker. This flaw effectively allows the circumvention of intended security controls designed to protect the browser environment.

Business impact

The ability to bypass security mitigations undermines the fundamental trust model of the browser, potentially exposing users to further exploitation or unauthorized actions. With a CVSS score of 7.5, this vulnerability represents a high-severity risk that could be leveraged to facilitate broader attacks against the mobile device or the user's session.

Remediation

Immediate Action: Update Firefox for Android to version 150 or later to ensure the mitigation bypass is resolved.

Proactive Monitoring: Review mobile device management logs and application access logs for any anomalous behavior following updates.

Compensating Controls: Ensure that all mobile security policies are enforced and that users are instructed to avoid interacting with untrusted or suspicious web content until the update is applied.

Exploitation status

Public Exploit Available: No (exploit_available: false)

Analyst recommendation

Given the high-severity nature of a mitigation bypass, organizations and individual users should prioritize updating to Firefox for Android version 150 immediately. Failure to apply this patch leaves the browser susceptible to techniques that circumvent existing security barriers, significantly increasing the risk of successful follow-on attacks.

More Mozilla CVEs

Sources

Originally found and disclosed by Hafiizh & Kang Ali, per the CVE Program record.