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OpenAdvisories
Medium · 4.3 Known exploited CVE-2021-35247 EUVD-2021-21890GHSA-jqwj-9jvg-583v

Improper Input Validation Vulnerability in Serv-U

Published Jan 7, 2022 · Updated Oct 21, 2025 · Assigned by SolarWinds

Description

Serv-U web login screen to LDAP authentication was allowing characters that were not sufficiently sanitized. SolarWinds has updated the input mechanism to perform additional validation and sanitization. Please Note: No downstream affect has been detected as the LDAP servers ignored improper characters. To insure proper input validation is completed in all environments. SolarWinds recommends scheduling an update to the latest version of Serv-U.

Affected products

VendorProductAffectedFixed
SolarWinds Serv-U 15.2.5 and previous versions – < 15.3 15.3

References