What is CVE-2026-28318?
SolarWinds Serv-U is susceptible to specially crafted POST requests that crash the Serv-U service without authentication using Content-Encoding: deflate. Mitigation steps are provided to secure customer environments in the SolarWinds Trust Center if you are unable to deploy the update
Timeline
- 2026-06-04Published to the U.S. National Vulnerability Database (NVD)
- 2026-06-05Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
- 2026-06-19CISA federal remediation deadline (BOD 22-01)
- 2026-10-21NVD record last updated
CISA Known Exploited Vulnerability
SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability
Affected product
SolarWinds Serv-U
Remediation Steps
- Check CISA's Known Exploited Vulnerabilities catalog for product-specific guidance
- Contact vendor for available security patches
- Apply patch or implement recommended mitigations from vendor advisory
- Verify patch installation and monitor for indicators of active exploitation
References
- 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
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-28318
- https://nvd.nist.gov/vuln/detail/CVE-2026-28318
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Referenced in our briefings & reports
- Vulnerability Priority Report – Week 5 of June 2026 (June 29 – July 5)
- Vulnerability Priority Report – Week 4 of June 2026 (June 22 – 28)
- Vulnerability Priority Report – Week 3 of June 2026 (June 15 – 21)
- Vulnerability Priority Report – Week 2 of June 2026 (June 8 – 14)
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🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.