CVE-2021-35247

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.

Score

CVSS 3.1 5.3 Medium

Status

Analyzed - psirt@solarwinds.com

Published

2022-01-10

Last modified

2025-10-21

Known exploited (CISA KEV)

since 2022-01-21, action due 2022-02-04: Apply updates per vendor instructions.

Weaknesses

CWE-20

Affected products

• Serv-u (Solarwinds)

References

• https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-3_release_notes.htm
• https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35247
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35247