CVE-2023-29534

Different techniques existed to obscure the fullscreen notification in Firefox and Focus for...

9.1 Critical

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

0.71%Up 0.7 points since Jun 20, 2023

What each source reports

NVD Score used 9.1

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.

Record: CVE-2023-29534
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-02

CVE List 9.1

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.

Record: CVE-2023-29534
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-02

EUVDEUVD-2023-33076 9.1

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.

Record: EUVD-2023-33076
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-4g28-wh72-jhwq 9.1

Different techniques existed to obscure the fullscreen notification in Firefox and Focus for...

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.

Record: GHSA-4g28-wh72-jhwq
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-02

OSV 9.1

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.

Record: CVE-2023-29534
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-29534 9.1

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.

Record: UBUNTU-CVE-2023-29534
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-02

OSVopenSUSE-SU-2024:12882-1 No score

MozillaFirefox-112.0.1-1.1 on GA media

These are all security issues fixed in the MozillaFirefox-112.0.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:12882-1
Updated: 2026-11-02

OSVopenSUSE-SU-2024:14572-1 No score

firefox-esr-128.5.1-1.1 on GA media

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:14572-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`mozjs52` Ubuntu:18.04:LTS	All versions, plus listed versions 52.3.1-0ubuntu352.3.1-7fakesync152.8.1-0ubuntu0.18.04.152.9.1-0ubuntu0.18.04.1	None known
`mozjs38` Ubuntu:18.04:LTS	All versions, plus listed versions 38.8.0~repack1-0ubuntu138.8.0~repack1-0ubuntu338.8.0~repack1-0ubuntu4	None known
`mozjs68` Ubuntu:20.04:LTS	All versions, plus listed versions 68.5.0-1~fakesync68.5.0-2~fakesync68.6.0-168.6.0-1ubuntu1	None known
`mozjs52` Ubuntu:20.04:LTS	All versions, plus listed versions 52.9.1-1build152.9.1-1ubuntu3	None known
`mozjs78` Ubuntu:22.04:LTS	All versions, plus listed versions 78.13.0-178.15.0-278.15.0-4ubuntu1	None known
`mozjs91` Ubuntu:22.04:LTS	All versions, plus listed versions 91.5.1-0ubuntu191.6.0-191.6.0-291.7.0-291.10.0-0ubuntu1	None known
`MozillaFirefox` openSUSE:Tumbleweed From an advisory covering 21 CVEs	before 112.0.1-1.1	112.0.1-1.1
`firefox-esr` openSUSE:Tumbleweed From an advisory covering 1860 CVEs	before 128.5.1-1.1	128.5.1-1.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-29534 is a critical vulnerability (CVSS 9.1) in Mozilla Firefox For Android, published June 19, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.71%, the 53rd percentile. No source names a fixed version.

References

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