CVE-2025-23109: Mozilla Firefox for iOS · CWE-346
Affects Mozilla Firefox for iOSSource CVE Database V5
Not known to be exploited · CVSS 6.5 Medium : upgrade to 134 when convenient.
Data as of 26 Oct 2026, 10:12 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 134
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 11 Jan 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade Mozilla Firefox for iOS to 134.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Mozilla Firefox for iOS | Affected
| Fixed in
|
AI-suggested
This vulnerability is fixed in Firefox for iOS version 134. Users and administrators should ensure that Firefox for iOS is updated to version 134 or later to mitigate this issue. No additional mitigation steps are required as the vendor has provided an official fix.
Description
Long hostnames in URLs could be leveraged to obscure the actual host of the website or spoof the website address. This vulnerability was fixed in Firefox for iOS 134.