CVE-2025-40536CRITICAL 9.8CISA KEVEPSS p99.6%

CVE-2025-40536SolarWinds Web Help Desk Security Control Bypass Vulnerability

SolarWinds / Web Help Desk

Description

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

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS81.62% probability of exploitation · percentile 99.6% · 2026-06-17T12:03:21Z
Published2026-01-28
Last modified2026-02-13

CISA KEV entry

Added to KEV: 2026-02-12

Underlying weaknesses· 1

CWE-693

References

  1. https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm
  2. https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40536
  3. https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40536
  4. https://www.huntress.com/blog/active-exploitation-solarwinds-web-help-desk-cve-2025-26399

1

TypeTargetConfidenceTier
WeaknessProtection Mechanism Failurecwe-6930%live

(incoming)1

TypeTargetConfidenceTier
KEVEntrySolarWinds Web Help Desk Security Control Bypass Vulnerabilitykev-cve-2025-405360%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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CVE-2025-40554
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CVE-2025-40552
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SolarWinds Web Help Desk Hardcoded Credential Vulnerability
CVE
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
CVE
CVE-2025-40553
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SolarWinds Orion Authentication Bypass Vulnerability
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.