CVE-2021-35247

Improper Input Validation Vulnerability in Serv-U

Published Jan 7, 2022 CVSS 3.1 · 4.3 Medium EPSS 3.6% KEV · Listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-21890 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.
History
Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo
Type Values Removed Values Added
Metrics kev

{'dateAdded': '2022-01-21'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Improper Input Validation Vulnerability in Serv-U Improper Input Validation Vulnerability in Serv-U
Weaknesses

Sources

Status
PUBLISHED
Assigner
SolarWinds
Published
Updated
Oct 21, 2025, 11:15 PM
Reserved
Jun 22, 2021, 12:00 AM
Status
Analyzed
Published
Jan 10, 2022, 2:10 PM
Modified
Jun 17, 2026, 3:57 AM