CVE-2026-28318SolarWindsServers and softwareJune 5, 2026

SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability

High 7.5Actively exploited

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.

What to do

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

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Details

Vendor
SolarWinds
Product
SolarWinds Serv-U
CVE
CVE-2026-28318
Affected versions
Serv-U 15.5: up to 15.5.4 (from the advisory and NVD; check the exact builds in the official advisory)
CVSS score
7.5
Actively exploited
Yes, listed in the CISA Known Exploited Vulnerabilities catalog
CISA due date
June 19, 2026 (deadline for US federal agencies: a good benchmark for you too)
Source
CISA KEV – original advisory
Published
June 5, 2026

The description and the recommended action are quoted from the public advisory; severity, exploitation status and affected versions are compiled automatically from public sources and may contain errors. The vendor's original advisory prevails: check it before taking action. This information is provided without warranty and does not replace a professional assessment.

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