CVE-2026-28318 — SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability
CVE-2026-28318: SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | SolarWinds |
| Product | Serv-U |
| Date added | 2026-06-05 |
| Due date | 2026-06-19 |
| Ransomware campaign use | Unknown |
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 (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://www.solarwinds.com/trust-center/security-advisories/cve-2026-28318 ; https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-4-hotfix-1_release_notes.htm#link7 ; https://nvd.nist.gov/vuln/detail/CVE-2026-28318
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-28318
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog