PT-2025-22404 · Mozilla · Firefox

James Lee · Published 2025-05-20 · Updated 2025-06-14 · CVE-2025-5020

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions Firefox for iOS versions prior to 139

Description The issue allows attackers to spoof website addresses when opening maliciously-crafted URLs in Firefox from other apps, such as Safari, if the URLs utilize non-HTTP schemes used internally by the Firefox iOS client.

Recommendations For Firefox for iOS versions prior to 139, update to version 139 or later to resolve the issue. As a temporary workaround, consider avoiding the use of non-HTTP schemes in URLs when opening them from other apps. Restrict access to potentially malicious URLs to minimize the risk of exploitation.

Fix

Weakness Enumeration

CWE-939

Related Identifiers

BDU:2025-06031

CVE-2025-5020

Affected Products

Firefox

References · 12

• https://mozilla.org/security/advisories/mfsa2025-39 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-06031 · Security Note
• https://mozilla.org/en-US/security/advisories/mfsa2025-39/#CVE-2025-5020 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-5020 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-5020 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-5020 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-5020 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-5020 · Vendor Advisory
• https://twitter.com/VulmonFeeds/status/1925312042149244978 · Twitter Post
• https://twitter.com/CVEnew/status/1925247837165543475 · Twitter Post
• https://twitter.com/dailycve/status/1933989354382487969 · Twitter Post
• https://bugzilla.mozilla.org/show_bug.cgi?id=1951558 · Note