MEDIUM CISA KEV

CVE-2021-35247

CVSS v3

5.3

MEDIUM

EPSS Score

2.9%

exploit probability

CISA KEV

Yes

known exploited

Exploitation

SSVC status

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.

CISA Known Exploited Vulnerability

Date Added
1/21/2022
Patch Due Date
2/4/2022
Ransomware Use
Unknown

Technical details

Published
1/10/2022

Frequently asked questions

What is 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.

Is CVE-2021-35247 actively exploited?

Yes. CVE-2021-35247 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2/4/2022.

What is the CVSS score for CVE-2021-35247?

CVE-2021-35247 has a CVSS v3 base score of 5.3 (MEDIUM severity).

Is CVE-2021-35247 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.