CVE-2021-35223

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

The Serv-U File Server allows for events such as user login failures to be audited by executing a command. This command can be supplied with parameters that can take the form of user string variables, allowing remote code execution.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
SolarWinds	Serv-U	>= 15.2.3 and previous versions, <= 15.2.4

References

https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-2-4_release_notes.htmRelease Notes, Vendor Advisory
https://support.solarwinds.com/SuccessCenter/s/article/Execute-Command-Function-Allows-Remote-Code-Execution-RCE-Vulnerability-CVE-2021-35223?language=en_USVendor Advisory
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35223Vendor Advisory
https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-2-4_release_notes.htmRelease Notes, Vendor Advisory
https://support.solarwinds.com/SuccessCenter/s/article/Execute-Command-Function-Allows-Remote-Code-Execution-RCE-Vulnerability-CVE-2021-35223?language=en_USVendor Advisory
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35223Vendor Advisory

Timeline

Published: Aug 31, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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