CVE-2021-35247
4.3 · MEDIUM Actively ExploitedOverview
CVE-2021-35247 is a medium-severity vulnerability affecting solarwinds serv-u. It was published on January 10, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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
Check the references section for vendor advisories and patches from solarwinds. Update serv-u to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| solarwinds | serv-u | >= 0, < 15.3 | Affected |
References
Frequently Asked Questions
What is CVE-2021-35247?
CVE-2021-35247 is a medium-severity vulnerability affecting solarwinds serv-u. It was published on January 10, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
How severe is CVE-2021-35247?
This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-35247?
Check the references section for vendor advisories and patches from solarwinds. Update serv-u to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-35247?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-35247 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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