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Vulnerabilities

Vulnerability · CVE-2025-40548

A missing validation process exists in Serv U when abused, could give a malicious actor with access to admin privileges the ability to execute code.

Published Nov 18, 2025 · catalog updated Feb 26, 2026 · SolarWinds Serv-U

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-40548. EPSS is 0.76%. Act only if a listed version of SolarWinds Serv-U is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.76%
Remediation
Advisory link
Affected products
vendor SolarWinds Serv-U SolarWinds Serv-U 15.5.2 and prior versions

A missing validation process exists in Serv U 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor SolarWinds Serv-U SolarWinds Serv-U 15.5.2 and prior versionsSolarWinds Serv-U 15.5.2 and prior versions

How to fix CVE-2025-40548

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-40548. EPSS is 0.76%. Act only if a listed version of SolarWinds Serv-U is installed.

Which versions are affected?

Compare what you have installed with SolarWinds Serv-U SolarWinds Serv-U 15.5.2 and prior versions SolarWinds Serv-U 15.5.2 and prior versions. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.76%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 18, 2025 · EUVD

    Detected

    A missing validation process exists in Serv U 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.

  2. Feb 26, 2026 · EUVD

    Updated

    A missing validation process exists in Serv U 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.

Sources

  • CVE.orgVulnerability recordCVE-2025-40548

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-40548

    30-day exploitation probability 0.76%

    first.org
  • EUVDVulnerability recordEUVD-2025-197929

    A missing validation process exists in Serv U 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 fre

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 2, 2026
  • CVE.orgOct 27, 2026
  • EUVDOct 26, 2026