Sophos Firewall and UTM
CVE-2020-15069: XG Firewall Buffer Overflow
Sophos XG Firewall 17.x through v17.5 MR12 allows a Buffer Overflow and remote code execution via the HTTP/S Bookmarks feature for clientless access.
Published
ExploitedYes, in CISA KEVAdded 6 Feb 2025
Ransomware useNot reportedPer CISA
SeverityCRITICALCVSS 3.1 9.8
EPSS11%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 |
|---|---|
| n/a n/a | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
Sophos XG Firewall 17.x through v17.5 MR12 allows a Buffer Overflow and remote code execution via the HTTP/S Bookmarks feature for clientless access. Hotfix HF062020.1 was published for all firewalls running v17.x.
Exploitation
CISA lists this CVE as exploited in the wild since 6 Feb 2025.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.