VDB
CVE-2026-28318
CVE-2026-28318
PUBLISHED
KEV
CVSS 7.5 HIGH
A remote, unauthenticated threat actor without any user interaction and without having a role with any privileges, can exploit this vulnerability to crash the Serv-U service. They can accomplish that by sending specially crafted POST requests with Content-Encoding set to ‘deflate’.
EPSS 0.06% · 19.7th percentile
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.06%
19.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| SolarWinds | SolarWinds Serv-U versions prior to 15.5.4 |
Timeline
- Jun 4, 2026 CVE Published
- Jun 5, 2026 CISA KEV Added
- Jun 5, 2026 EPSS Score
- Jun 7, 2026 Security Advisory
- Jun 10, 2026 Coalition ESS Score
References
- https://ccb.belgium.be/advisories/warning-actively-exploited-high-criticality-uncontrolled-resource-consumption advisory
- https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28318 vendor
- https://nvd.nist.gov/vuln/detail/CVE-2026-28318 technical
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-28318 advisory
- https://github.com/advisories/GHSA-4vx4-vp54-mwmc technical