SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH

7.5 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation Likelihood

EPSS Prediction

7.84 %

Predictive Probability

Percentile Rank

92.2 th

Documented as more likely to be exploited than 92.2% of known CVEs.

Detection Date

Jun 05, 2026

Remediation Due

Jun 19, 2026

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

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

External Intelligence

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

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2026-28318