SolarWinds Serv-U Logic Abuse - Remote Code Execution Vulnerability

published 2025-11-18 11 mo ago modified 2026-10-18 21 d ago also EUVD-2025-197930

cvss: 9.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits: 0; none known

A logic error vulnerability exists in Serv-U which when abused could give a malicious actor with access to admin privileges the ability to execute code.

This issue requires administrative privileges to abuse. On Windows deployments, the risk is scored as a medium because services frequently run under less-privileged service accounts by default.

Patch / fix

fixed in 1

solarwinds serv-u 15.5.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 11 mo ago (2025-11-19)

Exploit prediction

0.97% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

SolarWinds Serv-U

Classification

Weakness

CWE-116 Improper Encoding or Escaping of Output

References

solarwinds.com /trust-center/security-advisories/CVE-2025-40547
vendor-advisory
documentation.solarwinds.com /en/success_center/servu/content/release_notes/servu_15-5-3_release_notes.htm
release-notes

Sources

CVE List CVE-2025-40547
NVD CVE-2025-40547

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary