CVE-2023-29534

Name: CVE-2023-29534
Creator: NVD / NIST
Published: 2023-06-19T11:15:09.797+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2023-29534 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.70%

48.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 112.0
Mozilla	Firefox Focus	< 112.0

References

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

Timeline

Published: Jun 19, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-29534?

How severe is CVE-2023-29534?

CVE-2023-29534 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2023-29534?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-29534?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST