CVEvulnerability

CVE-2021-35247

5.3 MEDIUM Known exploited Published 2022-01-10 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

SolarWinds Serv-U Improper Input Validation Vulnerability — SolarWinds Serv-U

SolarWinds Serv-U versions 15.2.5 and earlier contain an improper input validation vulnerability that allows attackers to build and send queries without sanitization.

Added to KEV
2022-01-21
Remediation due
2022-02-04
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-35247
Status
Analyzed
Published
2022-01-10
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:N
Weaknesses
CWE-20

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 configurations

• solarwinds serv-u (< 15.3)

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References