CVE-2026-28318—SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability

Vulnerability Name

SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability

Description

SolarWinds Serv-U contains an uncontrolled resource consumption vulnerability that allows specially crafted POST requests using the Content-Encoding: deflate header to crash the Serv-U service without authentication.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

Unknown

Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Additional Notes

• https://www.solarwinds.com/trust-center/security-advisories/cve-2026-28318
• https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-4-hotfix-1_release_notes.htm#link7
• https://nvd.nist.gov/vuln/detail/CVE-2026-28318

Related News Articles

• CISA: Patch actively exploited SolarWinds Serv-U DoS vulnerability (CVE-2026-28318)June 8, 2026
• CISA Adds Actively Exploited SolarWinds Serv-U DoS Flaw to KEV CatalogJune 6, 2026
• CISA: Hackers now exploit SolarWinds Serv-U flaw to crash serversJune 5, 2026

Related Weaknesses

• CWE-400