# SolarWinds Serv-U vulnerability added to CISA KEV catalog

Published: 2026-06-05 · Severity: elevated · Sectors: government-national
Canonical: https://vorant.io/reports/da2f3331-b5ef-57ae-b2b1-f2b525d458d3/solarwinds-serv-u-vulnerability-added-to-cisa-kev-catalog

> CISA confirms CVE-2026-28318, a resource consumption flaw in SolarWinds Serv-U, is actively exploited in the wild.

CISA has added CVE-2026-28318 to its Known Exploited Vulnerabilities (KEV) Catalog based on evidence of active exploitation. The vulnerability affects SolarWinds Serv-U and is classified as an uncontrolled resource consumption issue—a frequent attack vector for malicious actors that poses significant risk to federal networks. Under Binding Operational Directive (BOD) 22-01, Federal Civilian Executive Branch agencies are required to remediate this vulnerability by an assigned due date. CISA urges all organizations, regardless of sector, to prioritize patching this vulnerability as part of their vulnerability management program, given its active exploitation in the wild.

## Mentioned in this report

- Vulnerabilities: CVE-2026-28318 (KEV)

Source reporting: https://www.cisa.gov/news-events/alerts/2026/06/05/cisa-adds-one-known-exploited-vulnerability-catalog

---

This is the free public brief from Vorant Threat Intelligence. When citing, attribute "Vorant" and link https://vorant.io/reports/da2f3331-b5ef-57ae-b2b1-f2b525d458d3/solarwinds-serv-u-vulnerability-added-to-cisa-kev-catalog.
In the app the same report carries its extracted indicators, its detections (Splunk SPL already written, plus Elastic and Microsoft KQL where they apply), live profiles of the actors and CVEs it names, and the vendor research on the same campaign. Slack alerts fire on the vendors, sectors and countries a reader follows. A new account starts with three days of all of it, no card: https://vorant.io/signup