CVE-2025-40536

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.

Overview

State: PUBLISHED
Assigner (CNA): SolarWinds
CVSS severity: HIGH
CVSS score: 8.1 / 10
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Effective score: 8.1 / 10 HIGH source: CNA overview
CWE(s): CWE-693
Reserved: 2025-04-16
Published: 2026-01-28 07:30 UTC
Last updated: 2026-02-26 15:04 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2025/40xxx/CVE-2025-40536.json
Linked Threat: CVE-2025-40536 — SolarWinds Web Help Desk: SolarWinds Web Help Desk Security Control Bypass Vulnerability

CISA Known Exploited Vulnerabilities CISA KEV

CISA has confirmed in-the-wild exploitation of this CVE. Federal agencies must remediate by the due date below; private orgs should treat it as priority-1.

Vulnerability name: SolarWinds Web Help Desk Security Control Bypass Vulnerability
Vendor / project: SolarWinds
Product: Web Help Desk
Date added to KEV: 2026-02-12
Remediation due: 2026-02-15
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.
Ransomware campaign use: Unknown
CISA 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
CISA listing: www.cisa.gov/known-exploited-vulnerabilities-catalog

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-01-28 08:16:01 UTC
NVD last modified: 2026-02-13 14:03:55 UTC
NVD CVSS v3.1: 8.1 / 10 HIGH source: psirt@solarwinds.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore: 2.2 / 10
Impact subscore: 5.9 / 10
EPSS score: 0.6891 (probability of exploitation in next 30 days)
EPSS percentile: 98.65% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2025-206418
Assigner: SolarWinds
Published: Jan 28, 2026, 7:30:09 AM
Updated: Feb 26, 2026, 3:04:49 PM
EUVD base score (CVSS 3.1): 8.1 / 10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EUVD-reported EPSS: 67.4900
Vendors: SolarWinds
Products: Web Help Desk (12.8.8 HF1 and below)

ENISA 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.

EUVD references (2)

Affected products (1)

Vendor	Product	Versions	Platforms
SolarWinds	Web Help Desk	`12.8.8 HF1 and below` (affected)	—

Affected products — CPE 2.3 (1) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:a:solarwinds:web_help_desk:*:*:*:*:*:*:*:*

Vendor references (2)

References embedded in the original CVE record by the assigning CNA.

https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40536 vendor-advisorypatch
https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm release-notes

MITRE references (2) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

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, patch

Web references (3)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

https://attackerkb.com/topics/CVE-2025-40536 rapid7:attackerkb.com
https://www.cve.org/CVERecord?id=CVE-2025-40536 rapid7:www.cve.org
https://www.solarwinds.com/trust-center/security-advisories/cve-2025-40536 rapid7:www.solarwinds.com

NVD-tagged references (4)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm psirt@solarwinds.com Release Notes
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40536 134c704f-9b21-4f2e-91b3-4a467353bcc0 US Government Resource
https://www.huntress.com/blog/active-exploitation-solarwinds-web-help-desk-cve-2025-26399 134c704f-9b21-4f2e-91b3-4a467353bcc0 Third Party Advisory
https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40536 psirt@solarwinds.com Vendor Advisory

Indicators (2)

IOCs linked to the auto-promoted Threat row.

Type	Value	VirusTotal	Attached
cwe	`CWE-693`	no local data	2026-05-14 02:58 UTC
cve	`CVE-2025-40536`	no local data	2026-05-14 02:58 UTC

Remediations (9)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Patch Tuesday May 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

2026-05-14 16:20 UTC
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web:cybersecuritynews.com

Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.

2026-05-14 16:20 UTC
.NET and .NET Framework May 2026 servicing releases updates

web:devblogs.microsoft.com

Welcome to our combined .NET servicing updates for May 2026. Let's get into the latest release of .NET & .NET Framework, here is a quick overview of what's new in our servicing releases: Security improvements .NET and .NET Framework have been refreshed with the latest update as of May 12, 2026. This update contains security and non-security fixes. This month you will find that these CVEs ...

2026-05-14 16:20 UTC
Security Update Guide - Microsoft Security Response Center

web:msrc.microsoft.com

Security Update Guide - Microsoft Security Response Center

2026-05-14 16:20 UTC
KB5089899 - Description of the security update for SQL Server 2025 CU4 ...

web:support.microsoft.com

Applies To SQL Server 2025 on Windows (all editions), SQL Server 2025 on Linux (all editions) Summary Improvements and fixes included in this update How to obtain and install the update How to obtain or download the latest cumulative update package for Linux More information File information Information about protection and security Summary This security update contains fixes and resolves ...

2026-05-14 16:20 UTC
April 2026 Critical Patch Update Released | security - Oracle Blogs

web:blogs.oracle.com

For more information about the Critical Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.

2026-05-14 16:20 UTC
Microsoft May 2026 Patch Tuesday Fixes 130+ Vulnerabilities ... - LinkedIn

web:www.linkedin.com

Microsoft has released its May 2026 Patch Tuesday security updates, addressing more than 130 vulnerabilities across its software ecosystem, including Windows, Microsoft Office, SharePoint Server ...

2026-05-14 16:20 UTC
120 Vulnerabilities Patched: Microsoft's May 2026 Patch Tuesday ...

web:www.secpod.com

The second Tuesday of May 2026 marked another major security update release from Microsoft, addressing a broad range of vulnerabilities across Windows, Microsoft Office, SharePoint, Dynamics 365, .NET, DNS Client, and other core enterprise components. While this month's Patch Tuesday did not include any actively exploited or publicly disclosed zero-day vulnerabilities, the release still ...

2026-05-14 16:20 UTC
CISA Required Action

CISA KEV

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Due date: 2026-02-15 Known ransomware campaign use: Unknown

2026-05-14 01:13 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2025-40536.json.

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