CVE-2021-35211
Serv-U Remote Memory Escape Vulnerability
- State
- Published
- Severity
- 9.0 Critical
- Published
- Jul 14, 2021
- Updated
- Oct 21, 2025
- Reserved
- Jun 22, 2021
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.0 Critical | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H | SolarWinds |
Weaknesses
- CWE-787 Out-of-bounds Write
Affected Products
| Product | Versions |
|---|---|
Serv-U Managed File Transfer Server and Serv-U Secured FTPSolarWinds |
|
References
- https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211
- https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35211government-resource
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