CVE-2026-28318

FAUCET Score

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

First published: Jun 4, 2026Last modified: Jun 4, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 15.5.4CPE matchmatch criteria	cpe:2.3:a:solarwinds:serv-u::::::::
		15.5.4CPE matchmatch criteria	cpe:2.3:a:solarwinds:serv-u:15.5.4:-::::::

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

Exploitability Score

3.9

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

8.35%

Probability of exploitation in next 30 days

EPSS Percentile

94.4%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

Added to KEV · Jun 5, 2026

This CVE's current EPSS score of 0.0835 is in the 91st percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog

US Government Resource

documentation.solarwinds.com / en/success_center/servu/content/release_notes/servu_15-5-4-hotfix-1_release_notes.htm

Release Notes

solarwinds.com / trust-center/security-advisories/CVE-2026-28318

Vendor Advisory