VulnerabilityALERT Critical

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

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.

Impact

CISA lists CVE-2026-28318 as known exploited in the wild for SolarWinds Serv-U. Ransomware campaign use: Unknown. Federal remediation due date: 2026-06-19.

Recommended 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.

Published: 6/5/2026, 12:00:00 AMSource: CISA Known Exploited Vulnerabilities CatalogTags: CVE-2026-28318, SolarWinds, Serv-U, CISA KEV, CWE-400