CVE-2025-0244 | Address bar spoofing using an invalid protocol scheme on Firefox for Android

When redirecting to an invalid protocol scheme, an attacker could spoof the address bar. *Note: This issue only affected Android operating systems. Other operating systems are unaffected.*. This vulnerability was fixed in Firefox 134.

Published: 2025-01-07 Last update: 2026-04-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-0244 is rated Moderate Risk (56.1/100): CVSS Medium severity, with high exploitation likelihood (EPSS 9.84%, 93th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +2.35% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-0244

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-29 7.49% 9.84% +2.35%
2 2026-05-04 7.68% 7.49% -0.19%
3 2026-04-21 — 7.68% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-0244

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-0244

OS Trackers for CVE-2025-0244

vendor priority summary link
alpine — CVE-2025-0244: 1 source package rows (firefox); 129 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 129. https://security.alpinelinux.org/vuln/CVE-2025-0244
debian unimportant CVE-2025-0244 unimportant priority: Debian including 1 source packages (firefox), 1 status rows across 1 suites (sid): resolved 1. https://security-tracker.debian.org/tracker/CVE-2025-0244
redhat high — https://access.redhat.com/security/cve/CVE-2025-0244
suse high — https://www.suse.com/security/cve/CVE-2025-0244/
ubuntu negligible CVE-2025-0244 negligible priority: Ubuntu including 2 source packages (firefox, thunderbird), 10 status rows across 5 suites (focal, jammy, noble, oracular, upstream): not-affected 7, DNE 2, needs-triage 1. https://ubuntu.com/security/CVE-2025-0244

Affected software / configurations for CVE-2025-0244

Vendor Product Version Raw CPE
mozilla firefox < 134.0 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

References for CVE-2025-0244

cvelogic Threat Intelligence