CVE-2026-28318

high · 7.5Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

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

Added 2026-06-05Remediation due 2026-06-19

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

7.5

CVSS

40.0%

EPSS (exploit prob.)

99th

EPSS percentile

2026-06-04

Published

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

Weaknesses

CWE-400

Affected products

Vendor	Product	Affected versions
solarwinds	serv-u	< 15.5.4
solarwinds	serv-u	15.5.4

Check a specific version with /api/v1/cve/match.

References

https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-4-hotfix-1_release_notes.htm
https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28318
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-28318

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-28318