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Firefox for Android CVE-2026-74951

| EUVDEUVD-2026-60679 MEDIUM
Improper Restriction of Rendered UI Layers or Frames (CWE-1021)
2026-08-18 mozilla GHSA-39vv-6g7f-9j66
Google XSS Mozilla Red Hat Suse
6.5
CVSS 3.1 · Vendor: mozilla
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Severity by source

Vendor (mozilla) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
vuln.today AI
6.5 MEDIUM

Clickjacking requires only a network-hosted malicious page and an active user tap; no privileges needed, but UI:R is mandatory; only integrity is impacted as no data is exposed and no service is disrupted.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/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
HIGH
qualitative
Red Hat
6.1 MEDIUM
qualitative

Primary rating from Vendor (mozilla).

CVSS VectorVendor: mozilla

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

3
Analysis Generated
Aug 18, 2026 - 20:27 vuln.today
CVE Published
Aug 18, 2026 - 12:23 cve.org
MEDIUM 6.5
CVE Published
Aug 18, 2026 - 12:23 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

Clickjacking issue in Firefox for Android. This vulnerability was fixed in Firefox 154.

AnalysisAI

Clickjacking in Firefox for Android before version 154 allows remote unauthenticated attackers to overlay transparent or opaque UI frames over legitimate browser content, capturing user interactions intended for other elements. The CVSS vector (PR:N, UI:R, I:H) indicates no privileges are needed but a victim must interact with an attacker-controlled page, resulting in high-integrity impact through unintended user actions such as inadvertent permission grants or form submissions. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Attacker registers malicious domain
Delivery
Hosts page with overlapping iframe over sensitive UI element
Exploit
Lures victim to page via phishing or malvertising
Execution
Victim taps apparent benign content in Firefox Android
Persist
Hidden layer captures tap input
Impact
Unintended privileged action executed on victim's behalf
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Vulnerability AssessmentAI

Exploitation The victim must be using Firefox for Android (any version prior to 154) and must actively visit and interact with an attacker-controlled webpage - user interaction (UI:R) is a hard prerequisite. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The NVD CVSS 3.1 score of 6.5 Medium reflects a realistic middle-ground threat: network-accessible (AV:N), low complexity (AC:L), no required privileges (PR:N), but requiring user interaction (UI:R), with scope unchanged and only integrity impacted (I:H, C:N, A:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker registers a convincing domain and hosts a page that positions a transparent iframe over a Firefox for Android UI element - such as a permission grant button or a payment confirmation dialog. The victim is lured to the attacker's page via phishing link or malicious ad, and their tap on an apparently benign element is silently captured by the hidden layer, triggering an unintended high-impact action. …
Remediation Upgrade Firefox for Android to version 154 or later, as confirmed by Mozilla security advisory MFSA2026-74 at https://www.mozilla.org/security/advisories/mfsa2026-74/. … Detailed patch versions, workarounds, and compensating controls in full report.
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Threat intelligence, references, and detailed analysis are available after sign-in.

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
Container suse/kiosk/firefox-esr:140.14-75.12 Affected
SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP7 SUSE Linux Enterprise Module for Desktop Applications 15 SP7 SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Fixed
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Fixed

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CVE-2026-74951 vulnerability details – vuln.today
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