CVE-2021-35211
SolarWinds Serv-U Remote Code Execution Vulnerability
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Serv-U, fix it now.
CISA required action: Apply updates per vendor instructions.
US federal civilian agencies must remediate by Nov 17, 2021.
Patch status
Official fix available since
Apply the vendor's update to every affected system. Check the fixed-in versions below where known.
Basis: NVD patch reference
Description
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.
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
Affected products
| Product | Vendor | Affected versions | Fixed in | Source |
|---|---|---|---|---|
| Serv-U | SolarWinds | < 15.2.3; 15.2.3 | 15.2.3 | KEV |
Sources: KEV = CISA Known Exploited Vulnerabilities catalog.
Intelligence timeline
Developments from the last 30 days, newest first.
- CVSS scoredUpdateKEV
CVE-2021-35211 scored CVSS 10.0: SolarWinds Serv-U, SolarWinds Serv-U Remote Code Execution Vulnerability
CISA lists this as exploited in the wild and known to be used in ransomware campaigns. Unpatched Serv-U systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
- Patch releasedUpdateKEV
Patch released for CVE-2021-35211: SolarWinds Serv-U, SolarWinds Serv-U Remote Code Execution Vulnerability
An official fix is now available for SolarWinds Serv-U. This vulnerability is being exploited, so apply it promptly.
Basis: NVD patch reference
1 earlier event is available with a subscription. See plans.
Coverage
We have not published a story about this vulnerability yet.