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Known Exploited Vulnerability
9.8
CRITICAL CVSS 3.1
CVE-2025-40536
SolarWinds Web Help Desk Security Control Bypass Vulnerability - [Actively Exploited]
Description

SolarWinds Web Help Desk was found to be susceptible to a security control bypass vulnerability that if exploited, could allow an unauthenticated attacker to gain access to certain restricted functionality.

INFO

Published Date :

Jan. 28, 2026, 8:16 a.m.

Last Modified :

Feb. 13, 2026, 2:03 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

SolarWinds Web Help Desk contains a security control bypass vulnerability that could allow an unauthenticated attacker to gain access to certain restricted functionality.

Required Action :

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes :

https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm ; https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40536 ; https://nvd.nist.gov/vuln/detail/CVE-2025-40536

Affected Products

The following products are affected by CVE-2025-40536 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Solarwinds web_help_desk
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 49f11609-934d-4621-84e6-e02e032104d6
CVSS 3.1 HIGH [email protected]
CVSS 3.1 HIGH MITRE-CVE
CVSS 3.1 CRITICAL [email protected]
Solution
Address security control bypass by applying vendor patches.
  • Update SolarWinds Web Help Desk to the latest version.
  • Review access control configurations.
  • Implement least privilege principles.
  • Monitor for suspicious activity.
Public PoC/Exploit Available at Github

CVE-2025-40536 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-40536.

URL Resource
https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm Release Notes
https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40536 Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40536 US Government Resource
https://www.huntress.com/blog/active-exploitation-solarwinds-web-help-desk-cve-2025-26399 Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-40536 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-40536 weaknesses.

CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs Accessing Functionality Not Properly Constrained by ACLs CAPEC-17: Using Malicious Files Using Malicious Files CAPEC-20: Encryption Brute Forcing Encryption Brute Forcing CAPEC-22: Exploiting Trust in Client Exploiting Trust in Client CAPEC-36: Using Unpublished Interfaces or Functionality Using Unpublished Interfaces or Functionality CAPEC-51: Poison Web Service Registry Poison Web Service Registry CAPEC-57: Utilizing REST's Trust in the System Resource to Obtain Sensitive Data Utilizing REST's Trust in the System Resource to Obtain Sensitive Data CAPEC-59: Session Credential Falsification through Prediction Session Credential Falsification through Prediction CAPEC-65: Sniff Application Code Sniff Application Code CAPEC-74: Manipulating State Manipulating State CAPEC-87: Forceful Browsing Forceful Browsing CAPEC-107: Cross Site Tracing Cross Site Tracing CAPEC-127: Directory Indexing Directory Indexing CAPEC-237: Escaping a Sandbox by Calling Code in Another Language Escaping a Sandbox by Calling Code in Another Language CAPEC-477: Signature Spoofing by Mixing Signed and Unsigned Content Signature Spoofing by Mixing Signed and Unsigned Content CAPEC-480: Escaping Virtualization Escaping Virtualization CAPEC-668: Key Negotiation of Bluetooth Attack (KNOB) Key Negotiation of Bluetooth Attack (KNOB)

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
Skynoxk/CVE-2025-40554

CVE-2025-40554 Exploitation

Python

Updated: 2 weeks, 2 days ago
0 stars 0 fork 0 watcher
Born at : Jan. 31, 2026, 8:17 a.m. This repo has been linked 2 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-40536 vulnerability anywhere in the article.

  • TheCyberThrone
CISA KEV Catalog Update Feb 12 2026

February 13, 2026On February 12, 2026, CISA added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog. The addition confirms active exploitation in the wild and triggers a re ... Read more

Published Date: Feb 13, 2026 (5 days ago)
  • The Hacker News
Researchers Observe In-the-Wild Exploitation of BeyondTrust CVSS 9.9 Vulnerability

Threat actors have started to exploit a recently disclosed critical security flaw impacting BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA) products, according to watchTowr. "Overni ... Read more

Published Date: Feb 13, 2026 (5 days, 3 hours ago)
  • Daily CyberSecurity
Virtual Invasion: SolarWinds WHD Exploited to Host Hidden QEMU VMs

Image: Microsoft In a striking display of “living off the land” gone wrong, threat actors are turning legitimate administrative tools into stealthy backdoors. The Microsoft Defender Research Team has ... Read more

Published Date: Feb 10, 2026 (1 week, 1 day ago)
  • The Register
Someone's attacking SolarWinds WHD to steal high‑privilege credentials - but we don't know who or how

Digital intruders exploited buggy SolarWinds Web Help Desk (WHD) instances in December to break into victims' IT environments, move laterally, and steal high-privilege credentials, according to Micros ... Read more

Published Date: Feb 09, 2026 (1 week, 1 day ago)
  • security.nl
Microsoft meldt aanvallen op SolarWinds Help Desk-installaties

Aanvallers hebben in december aanvallen uitgevoerd tegen SolarWinds Help Desk-installaties, zo meldt Microsoft. Welke kwetsbaarheden de aanvallers daarbij gebruikten is volgens het techbedrijf onduide ... Read more

Published Date: Feb 09, 2026 (1 week, 1 day ago)
  • The Hacker News
SolarWinds Web Help Desk Exploited for RCE in Multi-Stage Attacks on Exposed Servers

Microsoft has revealed that it observed a multi‑stage intrusion that involved the threat actors exploiting internet‑exposed SolarWinds Web Help Desk (WHD) instances to obtain initial access and move l ... Read more

Published Date: Feb 09, 2026 (1 week, 1 day ago)
  • CybersecurityNews
Hackers Actively Exploiting SolarWinds Web Help Desk RCE Vulnerability to Deploy Custom Tools

SolarWinds Vulnerability Actively Exploited Active exploitation of a remote code execution (RCE) vulnerability in SolarWinds Web Help Desk (WHD) is accelerating, with attackers rapidly weaponizing com ... Read more

Published Date: Feb 09, 2026 (1 week, 2 days ago)
  • The Hacker News
CISA Adds Actively Exploited SolarWinds Web Help Desk RCE to KEV Catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added a critical security flaw impacting SolarWinds Web Help Desk (WHD) to its Known Exploited Vulnerabilities (KEV) catalog ... Read more

Published Date: Feb 04, 2026 (2 weeks ago)
  • TheCyberThrone
Critical SolarWinds Web Help Desk Vulnerabilities

January 30, 2026SolarWinds has released a critical security advisory addressing multiple severe vulnerabilities in its Web Help Desk (WHD) platform that impact versions prior to 2026.1. Among the six ... Read more

Published Date: Jan 30, 2026 (2 weeks, 5 days ago)
  • Help Net Security
SolarWinds fixes critical Web Help Desk RCE vulnerabilities, upgrade ASAP!

SolarWinds has fixed six critical and high-severity vulnerabilities in its popular Web Help Desk (WHD) support ticketing and asset management solution, and is urging customers to upgrade to v2026.1 as ... Read more

Published Date: Jan 29, 2026 (2 weeks, 6 days ago)
  • The Hacker News
SolarWinds Fixes Four Critical Web Help Desk Flaws With Unauthenticated RCE and Auth Bypass

SolarWinds has released security updates to address multiple security vulnerabilities impacting SolarWinds Web Help Desk, including four critical vulnerabilities that could result in authentication by ... Read more

Published Date: Jan 29, 2026 (2 weeks, 6 days ago)
  • CybersecurityNews
Critical Solarwinds Web Vulnerability Allows Remote Code Execution and Security Bypass

Multiple critical vulnerabilities in SolarWinds Web Help Desk (WHD), culminating in unauthenticated remote code execution (RCE) via Java deserialization in CVE-2025-40551, were uncovered by Horizon3.a ... Read more

Published Date: Jan 29, 2026 (2 weeks, 6 days ago)
  • Daily CyberSecurity
SolarWinds Web Help Desk Hit with Multiple RCE and Auth Bypass Vulnerabilities

Security researchers have disclosed a barrage of critical vulnerabilities in SolarWinds Web Help Desk (WHD) software. The flaws, ranging from hardcoded credentials to remote code execution (RCE), open ... Read more

Published Date: Jan 28, 2026 (3 weeks ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-40536 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Modified Analysis by [email protected]

    Feb. 13, 2026

    Action Type Old Value New Value
    Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40536 Types: US Government Resource
    Added Reference Type CISA-ADP: https://www.huntress.com/blog/active-exploitation-solarwinds-web-help-desk-cve-2025-26399 Types: Third Party Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Feb. 12, 2026

    Action Type Old Value New Value
    Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40536
    Added Reference https://www.huntress.com/blog/active-exploitation-solarwinds-web-help-desk-cve-2025-26399
  • Initial Analysis by [email protected]

    Feb. 03, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CPE Configuration OR *cpe:2.3:a:solarwinds:web_help_desk:*:*:*:*:*:*:*:* versions up to (excluding) 2026.1
    Added Reference Type SolarWinds: https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm Types: Release Notes
    Added Reference Type SolarWinds: https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40536 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Jan. 28, 2026

    Action Type Old Value New Value
    Added Description SolarWinds Web Help Desk was found to be susceptible to a security control bypass vulnerability that if exploited, could allow an unauthenticated attacker to gain access to certain restricted functionality.
    Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-693
    Added Reference https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm
    Added Reference https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40536
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact