Serv-U
CVE-2021-35211: Serv-U Remote Memory Escape Vulnerability
Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability.
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 |
|---|---|
| Serv-U Managed File Transfer Server and Serv-U Secured FTP (Windows) SolarWinds Serv-U | 15.2.3 HF1 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability.
Workarounds
SolarWinds advises to disconnect Serv-U Server from internet until patched.
Exploitation
CISA lists this CVE as exploited in the wild since 3 Nov 2021, including in ransomware campaigns.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.