Critical severity9.0CISA KEVNVD Advisory· Published Jul 14, 2021· Updated Jun 17, 2026
CVE-2021-35211
CVE-2021-35211
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*range: <15.2.3
- cpe:2.3:a:solarwinds:serv-u:15.2.3:-:*:*:*:*:*:*
- cpe:2.3:a:solarwinds:serv-u:15.2.3:hotfix1:*:*:*:*:*:*
- (no CPE)range: <15.2.3 HF2
- Range: <15.2.3 HF2
- Range: <15.2.3 HF2
- SolarWinds/Serv-U Managed File Transfer Server and Serv-U Secured FTPv5Range: SolarWinds Serv-U
Patches
Vulnerability mechanics
References
3- www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploitnvdPatchVendor Advisory
- www.solarwinds.com/trust-center/security-advisories/cve-2021-35211nvdPatchVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
2- CISA: Patch actively exploited SolarWinds Serv-U DoS vulnerability (CVE-2026-28318)Help Net Security · Jun 8, 2026
- CISA: Hackers now exploit SolarWinds Serv-U flaw to crash serversBleepingComputer · Jun 5, 2026