VulnIntel

CVE-2026-28318

CVSS 7.5 · HIGH
Exploited in the wild
Remediation overdue by 45 days
EPSS p90
Higher than 90% of all CVEs — elevated exploitation risk.
Patch available
Vendor advisory or patch linked

Published 6/4/2026 · updated 6/5/2026 · CWE-400

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Summary

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

CVSS 7.5 — HIGH

7.5 / 10
  • AV: Network
  • AC: Low complexity
  • PR: No privileges
  • UI: No user interaction
  • S: Scope unchanged
  • C: Confidentiality: None
  • I: Integrity: None
  • A: Availability: High

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

EPSS exploitation probability

5.3%

Percentile p90 — Higher than 90% of all CVEs — elevated exploitation risk.

Affected products

1 vendor/product entries
  • Solarwinds Serv U< 15.5.4
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Timeline

  1. Jun 4, 2026 · Disclosed / published in NVD
  2. Jun 5, 2026 · Added to CISA KEV catalog
  3. Jun 5, 2026 · Intel last updated
  4. Jun 19, 2026 · CISA remediation deadline

Intel sources

Which upstream feeds returned data for this CVE, and when they were last fetched.

  • NVD· 57 days ago
  • CVE.org· no data
  • FIRST EPSS· 57 days ago
  • CISA KEV· 46 days ago
  • OSV· 57 days ago

Listed in CISA KEV

Added 2026-06-05 · Remediation overdue by 45 days.

References

Vendor & CERT advisories1
Other2

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