CVE-2025-23109

Description

Long hostnames in URLs could be leveraged to obscure the actual host of the website or spoof the website address This vulnerability affects Firefox for iOS < 134.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Vendor Advisory mozilla.org
Affected: Mozilla Firefox for iOS
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1419275 issue tracking permissions required
https://www.mozilla.org/security/advisories/mfsa2025-06/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-23109?
CVE-2025-23109 has been scored as a medium severity vulnerability.
How to fix CVE-2025-23109?
To fix CVE-2025-23109, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-23109 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-23109 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-23109?
CVE-2025-23109 affects Mozilla Firefox for iOS.
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