CVE-2026-84117

HighCVSS 8.8

Published: 01/09/2026(UTC)Updated: 03/09/2026(UTC)Translated: 01/09/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.25%

16th percentile - higher than 16% of all known CVEs

Summary

Privilege escalation in Firefox for Android. Fixed in Firefox 155.

Risk Assessment

An attacker could escalate privileges on a mobile device, potentially leading to unauthorized data access.

Recommendation

Update Firefox on Android to version 155 or later.

Other vulnerabilities in Firefox for Android

See all

CVE-2026-118018Unknown
A spoofing issue exists in the Downloads component of Firefox for Android. This vulnerability was fixed in Firefox 159.
CVE-2023-29534Critical
In Firefox and Focus for Android, techniques were discovered to obscure the fullscreen notification, which could lead to user confusion and spoofing attacks. This affects Firefox for Android and Focus for Android versions prior to 112.
CVE-2026-100823Medium
Spoofing issue in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox 157.
CVE-2026-92033High
Privilege escalation vulnerability in Firefox for Android. Fixed in Firefox 156.
CVE-2026-74975Medium
A spoofing issue exists in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox 154.
CVE-2026-18809Medium
Information disclosure in Firefox for Android and Firefox Focus for Android. This vulnerability was fixed in Firefox 153.0.3.
CVE-2026-16397Medium
Clickjacking vulnerability in the WebExtensions component in Firefox for Android. This issue was fixed in Firefox 153.
CVE-2026-16373High
Vulnerability in the Privacy component in Firefox for Android. The flaw leads to information disclosure. The issue was fixed in Firefox 153.
CVE-2026-8951Medium
A spoofing issue exists in the Toolbar component in Firefox for Android. This vulnerability was fixed in Firefox 151.
CVE-2025-10530Medium
A spoofing issue exists in the WebAuthn component in Firefox for Android. This vulnerability was fixed in Firefox 143 and Thunderbird 143.

Original NVD description (English source)

Privilege escalation in Firefox for Android. This vulnerability was fixed in Firefox 155.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS