CVE-2025-27426 Firefox Mobile iOS Full Address Bar Spoof Using Server-Side Redirect to internal error page
Attackers can spoof the address bar in Firefox for iOS via server-side redirects to internal error pages, misleading users about the current site.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-27426?
CVE-2025-27426 is a medium-severity vulnerability in Mozilla Firefox, published on 4 Mar 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Malicious websites utilizing a server-side redirect to an internal error page could result in a spoofed website URL. This vulnerability was fixed in Firefox for iOS 136.
Weakness: CWE-601
Which versions are affected by CVE-2025-27426?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2025-27426?
No fix has been published for CVE-2025-27426 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-27426 being exploited?
There is no known exploitation of CVE-2025-27426 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-57gw-hcmr-f4g2.