Sophos Firewall and UTM
CVE-2023-5552: Password disclosure in Sophos Firewall
A password disclosure vulnerability in the Secure PDF eXchange (SPX) feature allows attackers with full email access to decrypt PDFs in Sophos Firewall version 19.5 MR3 (19.5.3) and older, if the password type is set to “Specified by sender”.
Published
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 19.5, 20.0 | Not affected |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A password disclosure vulnerability in the Secure PDF eXchange (SPX) feature allows attackers with full email access to decrypt PDFs in Sophos Firewall version 19.5 MR3 (19.5.3) and older, if the password type is set to “Specified by sender”.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.