Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since June 5, 2026.
CVE-2026-28318
SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability
Added to KEV June 5, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2026-28318
- CWE
- CWE-400
- Affected products
- Serv-U · SolarWinds Serv-U · SolarWinds
What happened
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 it means for your business
SolarWinds Serv-U is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-28318). 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. CISA remediation due date: 2026-06-19. If you need help checking exposure, call (864) 335-9223.
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.
CISA due date: June 19, 2026
Sources
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