CVE-2026-28318: CWE-400 Uncontrolled Resource Consumption in SolarWinds Serv-U
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
AI Analysis
Technical Summary
SolarWinds Serv-U before version 15.5.5 is vulnerable to a denial-of-service condition due to uncontrolled resource consumption (CWE-400). An attacker can send specially crafted POST requests with Content-Encoding: deflate headers that cause the Serv-U service to crash without authentication. This vulnerability affects availability but does not compromise confidentiality or integrity. No official patch or fix has been confirmed at this time, but mitigation steps are available from SolarWinds.
Potential Impact
The vulnerability allows unauthenticated attackers to crash the Serv-U service, resulting in denial of service. There is no impact on confidentiality or integrity. The service crash disrupts availability, potentially affecting business operations relying on Serv-U.
Mitigation Recommendations
Patch status is not yet confirmed — check the SolarWinds Trust Center for current remediation guidance. SolarWinds provides mitigation steps for customers unable to deploy updates. Follow vendor guidance to secure environments until an official fix is released.
CVE-2026-28318: CWE-400 Uncontrolled Resource Consumption in SolarWinds Serv-U
Description
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
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
SolarWinds Serv-U before version 15.5.5 is vulnerable to a denial-of-service condition due to uncontrolled resource consumption (CWE-400). An attacker can send specially crafted POST requests with Content-Encoding: deflate headers that cause the Serv-U service to crash without authentication. This vulnerability affects availability but does not compromise confidentiality or integrity. No official patch or fix has been confirmed at this time, but mitigation steps are available from SolarWinds.
Potential Impact
The vulnerability allows unauthenticated attackers to crash the Serv-U service, resulting in denial of service. There is no impact on confidentiality or integrity. The service crash disrupts availability, potentially affecting business operations relying on Serv-U.
Mitigation Recommendations
Patch status is not yet confirmed — check the SolarWinds Trust Center for current remediation guidance. SolarWinds provides mitigation steps for customers unable to deploy updates. Follow vendor guidance to secure environments until an official fix is released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- SolarWinds
- Date Reserved
- 2026-02-26T14:46:41.520Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a218ccae29bf47b50ad1a7d
Added to database: 6/4/2026, 2:33:46 PM
Last enriched: 6/4/2026, 2:48:27 PM
Last updated: 6/5/2026, 4:58:01 AM
Views: 12
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