June 5, 2026 · Applied Cybernetics Group
CVE-2026-28318 — SolarWinds Serv-U
SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability
- Added to KEV
2026-06-05- Federal due date
2026-06-19- Vendor
- SolarWinds
- Product
- Serv-U
- EPSS
- 91.4th percentile (score 0.067, as of
2026-06-08) - NVD CVSS v3.1
- 7.5 (HIGH)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2026-28318
CISA short 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.
Required 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.
NVD 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