CVEvulnerability
CVE-2021-35211
CISA Known Exploited Vulnerability
SolarWinds Serv-U Remote Code Execution Vulnerability — SolarWinds Serv-U
SolarWinds Serv-U contains an unspecified memory escape vulnerability which can allow for remote code execution.
- Added to KEV
- 2021-11-03
- Remediation due
- 2021-11-17
- Ransomware use
- Known
- Required action
- Apply updates per vendor instructions.
- Notes
- https://nvd.nist.gov/vuln/detail/CVE-2021-35211
- Status
- Analyzed
- Published
- 2021-07-14
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.0 CRITICAL — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 3.1 ([email protected])
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-787
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.
Affected configurations
• solarwinds serv-u (< 15.2.3)
• solarwinds serv-u 15.2.3
Related
Weakness · CWE (1)
- CWE-787 Out-of-bounds Write weakness
References
- https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit Patch, Vendor Advisory
- https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211 Patch, Vendor Advisory
- https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit Patch, Vendor Advisory
- https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211 Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35211 US Government Resource