Skip to main content

Firefox for Android CVE-2026-16404

| EUVDEUVD-2026-46242 HIGH
Authentication Bypass by Spoofing (CWE-290)
2026-07-21 mozilla GHSA-rq8r-gxxv-8f29
Mozilla Google Authentication Bypass Red Hat
High
Disputed · 7.4 Vendor: mozilla
Share

Severity by source

Sources disagree (Low–Critical)
Vendor (mozilla) PRIMARY
7.4 HIGH
AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
vuln.today AI
7.4 HIGH

Remote, low-complexity, unauthenticated spoofing needing victim interaction (UI:R); integrity-only impact with a trust-boundary scope change (S:C), no confidentiality or availability effect.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
SUSE
CRITICAL
qualitative
Red Hat
3.4 LOW
qualitative

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorVendor: mozilla

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

4
Analysis Generated
Jul 22, 2026 - 19:08 vuln.today
CVSS changed
Jul 22, 2026 - 18:22 NVD
7.4 (HIGH)
CVE Published
Jul 21, 2026 - 12:38 cve.org
UNKNOWN (no severity yet)
CVE Published
Jul 21, 2026 - 12:38 cve.org
HIGH 7.4

DescriptionCVE.org

Spoofing issue in Firefox for Android. This vulnerability was fixed in Firefox 153.

AnalysisAI

UI/content spoofing in Mozilla Firefox for Android (fixed in version 153) lets a remote attacker who lures a user to attacker-controlled content misrepresent trusted interface elements, undermining the integrity of what the user believes they are viewing or interacting with. The flaw is classified as an authentication-bypass-by-spoofing weakness (CWE-290) and requires user interaction. There is no public exploit identified at time of analysis, and EPSS exploitation probability is low (0.13%, 3rd percentile).

Technical ContextAI

The affected component is Mozilla's Gecko-based Firefox browser on the Android platform (CPE cpe:2.3:a:mozilla:firefox). The root-cause class is CWE-290, Authentication Bypass by Spoofing, in which the browser presents security-relevant UI or origin indicators (such as address-bar content, permission prompts, or origin attribution) in a way an attacker can forge, so the user or a trust decision is made against a spoofed identity rather than the genuine one. Mobile browsers are particularly exposed to this class because limited screen real estate and dynamic chrome (URL bar hiding/animation) create opportunities to overlay or misrepresent trusted indicators. The CVSS scope change (S:C) reflects that the spoofed content in the web context influences a trust boundary beyond the vulnerable component itself.

RemediationAI

Vendor-released patch: Firefox 153 - upgrade Firefox for Android to version 153 or later via the Google Play Store (or Mozilla's distribution channel), as referenced in Mozilla advisory MFSA2026-68 (https://www.mozilla.org/security/advisories/mfsa2026-68/). Because exploitation requires the user to visit and interact with malicious content, interim compensating controls include enabling automatic app updates so the fix is applied promptly, and user awareness guidance to distrust unexpected prompts and verify origins; there is no server-side or configuration toggle that disables the affected browser UI behavior without breaking normal browsing, so patching is the only reliable fix. Prioritize managed/MDM fleets by pushing the updated app version.

More in Mozilla

View all
CVE-2015-4495 HIGH POC
8.8 Aug 08

The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote
CVE-2013-1690 HIGH POC
8.8 Jun 26

Mozilla Firefox before 22.0, Firefox ESR 17.x before 17.0.7, Thunderbird before 17.0.7, and Thunderbird ESR 17.x before

CVE-2013-0758 CRITICAL POC
9.3 Jan 13

Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderb
CVE-2013-0753 CRITICAL POC
9.3 Jan 13

Use-after-free vulnerability in the serializeToStream implementation in the XMLSerializer component in Mozilla Firefox b
CVE-2012-3993 CRITICAL POC
9.3 Oct 10

The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbi
CVE-2013-1710 CRITICAL POC
10.0 Aug 07

The crypto.generateCRMFRequest function in Mozilla Firefox before 23.0, Firefox ESR 17.x before 17.0.8, Thunderbird befo
CVE-2017-3823 HIGH POC
8.8 Feb 01

An issue was discovered in the Cisco WebEx Extension before 1.0.7 on Google Chrome, the ActiveTouch General Plugin Conta
CVE-2014-8636 HIGH POC
7.5 Jan 14

The XrayWrapper implementation in Mozilla Firefox before 35.0 and SeaMonkey before 2.32 does not properly interact with

CVE-2013-0757 CRITICAL POC
9.3 Jan 13

The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.2, Thunderbi
CVE-2014-1510 CRITICAL POC
9.8 Mar 19

The Web IDL implementation in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and Se
CVE-2014-1511 CRITICAL POC
9.8 Mar 19

Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allow remo
CVE-2013-0643 HIGH
8.8 Feb 27

The Firefox sandbox in Adobe Flash Player before 10.3.183.67 and 11.x before 11.6.602.171 on Windows and Mac OS X, and b

Same weakness CWE-290 – Authentication Bypass by Spoofing

View all
CVE-2024-54085 CRITICAL
9.8
CVE-2023-50224 MEDIUM
6.5
CVE-2024-4358 CRITICAL POC
9.8
CVE-2018-5353 CRITICAL POC
9.8
CVE-2023-51350 CRITICAL POC
9.8
CVE-2022-3180 CRITICAL
9.8
CVE-2025-66570 CRITICAL POC
10.0
CVE-2025-49002 CRITICAL POC
9.8

Same technique Authentication Bypass

View all
CVE-2023-22515 CRITICAL POC
9.8
CVE-2012-4681 CRITICAL POC
9.8
CVE-2013-2465 CRITICAL POC
9.8
CVE-2011-3544 CRITICAL POC
9.8
CVE-2022-40684 CRITICAL POC
9.8
CVE-2025-61882 CRITICAL POC
9.8
CVE-2024-0012 CRITICAL POC
9.3
CVE-2023-46805 HIGH POC
8.2

Vendor StatusVendor

SUSE

Severity: Critical
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7 Affected

Share

CVE-2026-16404 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy