What’s Vulnerable › Vulnerabilities

CVE-2023-29534

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-06-19 · updated 2026-08-19

Description

Different techniques existed to obscure the fullscreen notification in Firefox and Focus for Android. These could have led to potential user confusion and spoofing attacks. *This bug only affects Firefox and Focus for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox for Android < 112 and Focus for Android < 112.

Affected products

• Mozilla Focus for iOS: before 112.0 — fixed in 112.0
• Mozilla Firefox for Android: before 112.0 — fixed in 112.0

How to fix

Upgrade to a fixed version: Mozilla Focus for iOS 112.0; Mozilla Firefox for Android 112.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1816007
• https://bugzilla.mozilla.org/show_bug.cgi?id=1816059
• https://bugzilla.mozilla.org/show_bug.cgi?id=1821155
• https://bugzilla.mozilla.org/show_bug.cgi?id=1821576
• https://bugzilla.mozilla.org/show_bug.cgi?id=1821906
• https://bugzilla.mozilla.org/show_bug.cgi?id=1822298
• https://bugzilla.mozilla.org/show_bug.cgi?id=1822305
• https://www.mozilla.org/security/advisories/mfsa2023-13/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1816007
• https://bugzilla.mozilla.org/show_bug.cgi?id=1816059
• https://bugzilla.mozilla.org/show_bug.cgi?id=1821155
• https://bugzilla.mozilla.org/show_bug.cgi?id=1821576

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