CVE-2025-40539

Published Feb 24, 2026

Last updated 13 days ago

Overview

Description
A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arbitrary native code as privileged account. 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.
Source
psirt@solarwinds.com
NVD status
Analyzed
Products
serv-u

Risk scores

CVSS 3.1

Type
Primary
Base score
7.2
Impact score
5.9
Exploitability score
1.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

psirt@solarwinds.com
CWE-704

Social media

Hype score
Not currently trending
  1. CVE-2025-40539 (CVSS:9.1, CRITICAL) is Analyzed. A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arb..https://t.co/J81nJRt7tJ #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre

    @cracbot

    28 Feb 2026

    58 Impressions

    0 Retweets

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  2. Patch these 4 critical, make-me-root SolarWinds bugs ASAP The four flaws, all of which earned a 9.1 CVSS rating, include a broken access control vulnerability (CVE-2025-40538), two type confusion bugs (CVE-2025-40540 and CVE-2025-40539), and an Insecure Direct Object Reference h

    @johndjohnson

    27 Feb 2026

    64 Impressions

    1 Retweet

    1 Like

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  3. Warning: 4 critical vulnerabilities in #SolarWinds Serv-U. CVE-2025-40538, CVE-2025-40539, CVE-2025-40540 and CVE-2025-40541 share the same CVSS score of 9.1. Threat actors could exploit either to achieve remote code execution. #RCE! https://t.co/JohgnAP6Bh #Patch #Patch #Patch

    @CCBalert

    25 Feb 2026

    267 Impressions

    2 Retweets

    3 Likes

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  4. 🚨SolarWinds Serv-Uに重大な脆弱性、サーバーへのrootアクセスが可能に(CVE-2025-40538、CVE-2025-40539他) 🇦🇪アラブ首長国連邦、「テロリスト」によるランサムウェア攻撃を阻止したと主張 〜サイバーアラート2

    @MachinaRecord

    25 Feb 2026

    145 Impressions

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  5. Patches for 4 CVSS 9.1 #Solarwinds vulns. Info at SecAlerts: CVE-2025-40538: https://t.co/rCuV1KEDja CVE-2025-40539: https://t.co/DLNLvD1w5o CVE-2025-40540: https://t.co/wKS4JDkjIq CVE-2025-40541: https://t.co/QfGFIUfORv #ciso #cio #cto #vulnerabilities #cybersecurity #msp #mssp

    @SecAlertsCo

    25 Feb 2026

    81 Impressions

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  6. CVE-2025-40539 A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arbitrary native code as privileged account. Thi… https://t.co/ATOCy3XyM9

    @CVEnew

    24 Feb 2026

    112 Impressions

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  7. CVE-2025-40539 Type Confusion Vulnerability in Serv-U Enables Privileged Native Code Execution https://t.co/WrqSYe5Lbg

    @VulmonFeeds

    24 Feb 2026

    42 Impressions

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    1 Like

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  8. [CVE-2025-40539: CRITICAL] Type confusion vulnerability in Serv-U allows executing arbitrary code as privileged account. Needs admin privileges to exploit. Medium risk on Windows due to default less-privileg...#cve,CVE-2025-40539,#cybersecurity https://t.co/IzobxZpnpx

    @CveFindCom

    24 Feb 2026

    63 Impressions

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  9. CVE-2025-40539 is a **type confusion vulnerability** found in Serv-U, a popular file transfer server software. When exploited, this flaw allows a malicious actor to execute arbitrary native code with the privileges of the compromised service, which can lead to full system

    @CveTodo

    24 Feb 2026

    49 Impressions

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