PT-2026-21669 · Solarwinds · Serv-U

Published 2026-02-24 · Updated 2026-03-10 · CVE-2025-40540

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Serv-U (affected versions not specified)

Description A type confusion issue exists in Serv-U, potentially allowing a malicious actor to execute arbitrary native code with privileged account privileges. Exploitation requires administrative privileges. On Windows systems, the risk is considered medium because services often run under less-privileged service accounts by default. The vulnerability involves a type confusion, which can lead to the execution of arbitrary native code.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Incorrect Type Conversion or Cast

Weakness Enumeration

CWE-704

Related Identifiers

CVE-2025-40540

Affected Products

Serv-U

References · 19

• https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-4_release_notes.htm · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-40540 · Vendor Advisory
• https://solarwinds.com/trust-center/security-advisories/CVE-2025-40540 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-40540 · Security Note
• https://twitter.com/cracbot/status/2028062786224529909 · Twitter Post
• https://t.me/secharvester/21529 · Telegram Post
• https://twitter.com/SecAlertsCo/status/2026489674374722044 · Twitter Post
• https://twitter.com/CCBalert/status/2026684982597497071 · Twitter Post
• https://reddit.com/r/Action1/comments/1rq3lpr/patch_tuesday_march_2026 · Reddit Post
• https://t.me/CVEtracker/45582 · Telegram Post
• https://twitter.com/cracbot/status/2027700475160879369 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2026238330665328977 · Twitter Post
• https://t.me/true_secator/7946 · Telegram Post
• https://twitter.com/johndjohnson/status/2027416822430195739 · Twitter Post
• https://twitter.com/CveFindCom/status/2026208175368573036 · Twitter Post