CVE-2025-27424: Vulnerability in Mozilla Firefox for iOS
Websites redirecting to a non-HTTP scheme URL could allow a website address to be spoofed for a malicious page. This vulnerability was fixed in Firefox for iOS 136.
AI Analysis
Technical Summary
This vulnerability (CVE-2025-27424) affects Mozilla Firefox for iOS versions before 136. It involves the browser's handling of redirects to non-HTTP scheme URLs, which could be exploited by malicious websites to spoof the address bar, misleading users about the true destination. The flaw is related to improper validation of URL schemes during redirection. Mozilla fixed this issue in Firefox for iOS 136 as part of security updates addressing multiple address bar spoofing vulnerabilities.
Potential Impact
The vulnerability allows an attacker controlling a website to redirect users to a non-HTTP scheme URL in a way that spoofs the address bar. This could lead to users being deceived about the legitimacy of the site they are visiting, potentially facilitating phishing or other social engineering attacks. There is no direct impact on confidentiality or availability reported. No known exploits in the wild have been documented.
Mitigation Recommendations
Mozilla fixed this vulnerability in Firefox for iOS version 136. Users and administrators should update to Firefox for iOS 136 or later to remediate this issue. Patch status is confirmed by the vendor advisory. No additional mitigation steps are indicated by Mozilla.
CVE-2025-27424: Vulnerability in Mozilla Firefox for iOS
Description
Websites redirecting to a non-HTTP scheme URL could allow a website address to be spoofed for a malicious page. This vulnerability was fixed in Firefox for iOS 136.
CVSS v3.1
Score 4.3medium
Affected software
pkg:github/mozilla/firefox-iosRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2025-27424) affects Mozilla Firefox for iOS versions before 136. It involves the browser's handling of redirects to non-HTTP scheme URLs, which could be exploited by malicious websites to spoof the address bar, misleading users about the true destination. The flaw is related to improper validation of URL schemes during redirection. Mozilla fixed this issue in Firefox for iOS 136 as part of security updates addressing multiple address bar spoofing vulnerabilities.
Potential Impact
The vulnerability allows an attacker controlling a website to redirect users to a non-HTTP scheme URL in a way that spoofs the address bar. This could lead to users being deceived about the legitimacy of the site they are visiting, potentially facilitating phishing or other social engineering attacks. There is no direct impact on confidentiality or availability reported. No known exploits in the wild have been documented.
Mitigation Recommendations
Mozilla fixed this vulnerability in Firefox for iOS version 136. Users and administrators should update to Firefox for iOS 136 or later to remediate this issue. Patch status is confirmed by the vendor advisory. No additional mitigation steps are indicated by Mozilla.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2025-02-24T20:03:31.187Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2025-13/","vendor":"Mozilla"}]
Threat ID: 69dd057782d89c981f017299
Added to database: 04/13/2026, 15:02:15 UTC
Last enriched: 06/10/2026, 10:04:59 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 96
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