Sophos Firewall and UTM
CVE-2021-25267: Multiple XSS in Sophos Firewall
Multiple XSS vulnerabilities in Webadmin allow for privilege escalation from admin to super-admin in Sophos Firewall older than version 19.0 GA.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 3.1 6.8
EPSS1.1%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Sophos Firewall unspecified | 19.0 GA or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
Multiple XSS vulnerabilities in Webadmin allow for privilege escalation from admin to super-admin in Sophos Firewall older than version 19.0 GA.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.