CVE-2025-27425: Mozilla Firefox for iOS · Improper Authentication
Affects Mozilla Firefox for iOSSource CVE Database V5
Not known to be exploited · CVSS 4.3 Medium : upgrade to 136 when convenient.
Data as of 26 Oct 2026, 09:08 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 13% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 136
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 4 Mar 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 136.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Mozilla Firefox for iOS | Affected
| Fixed in
|
AI-suggested
A fix is available in Firefox for iOS version 136. Users and administrators should update to version 136 or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Description
Scanning certain QR codes that included text with a website URL could allow the URL to be opened without presenting the user with a confirmation alert first. This vulnerability was fixed in Firefox for iOS 136.