Sophos Firewall and UTM
CVE-2022-0331: Information disclosure in Sophos Firewall
An information disclosure vulnerability in Webadmin allows an unauthenticated remote attacker to read the device serial number in Sophos Firewall version v18.5 MR2 and older.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 3.1 5.3
EPSS1.5%Chance of exploitation in 30 days
Public exploitNot tracked
FixSee advisory
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 to 18.5 MR2 | Upgrade past 18.5 MR2; see the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
An information disclosure vulnerability in Webadmin allows an unauthenticated remote attacker to read the device serial number in Sophos Firewall version v18.5 MR2 and older.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.