CVE-2021-35211

Published: Jul 14, 2021

Modified: Oct 21, 2025

PUBLISHED

CVSS v3.1

9.0

CRITICAL

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.

Vendor	Product	Versions
SolarWinds	Serv-U Managed File Transfer Server and Serv-U Secured FTP	affected `SolarWinds Serv-U - < 15.2.3 HF1`

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

References

https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35211

x_refsource_MISC

https://www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit

x_refsource_MISC

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CVE-2021-35211

Description

Affected Products

CVSS v3.1 Details

References