SolarWinds Serv-U Unauthenticated Denial of Service Vulnerability
CVE-2026-28318

7.5HIGH

Key Information:

Vendor

Solarwinds
Status
Serv-u
Vendor
CVE Published:
4 June 2026

What is CVE-2026-28318?

SolarWinds Serv-U is susceptible to specially crafted POST requests that crash the Serv-U service without authentication using Content-Encoding: deflate. Mitigation steps are provided to secure customer environments in the SolarWinds Trust Center if you are unable to deploy the update

Affected Version(s)

Serv-U Windows 15.5.4 and previous versions

References

https://www.solarwinds.com/trust-center/security-advisori...
https://documentation.solarwinds.com/en/success_center/se...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.