All vulnerabilities
CVE-2026-28318

SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability

SolarWinds Serv-UNetwork & edge
Open in ThreatlineRecord JSON
CVSS
7.5High
ExploitationExploited in the wildAdded to KEV 5 Jun 2026CISA KEV
Exploit odds (EPSS)43.7%Chance of exploitation activity in the next 30 days, higher than 98% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline19 Jun 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 4 Jun 2026, 14:05 UTCPublishedCVE List
  2. 5 Jun 2026Added to CISA KEVCISA KEV

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.

Text from CVE List

Affected versions 1

  • Serv-Uaffected: all versions through 15.5.4CVE List

References 6