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Weekly Signal
Live intelligence Updated 19 Aug 2026 · 20:27 UTC

Solarwinds · Web Help Desk

CVE-2025-40536

SolarWinds Web Help Desk Security Control Bypass Vulnerability

Recommended action

Validate affected assets and exposure now, then remediate on an accelerated schedule. Vendor advisory from www.solarwinds.com

View response plan
CVSS9.8
EPSS71.5%
KEVYes
ExploitationConfirmed exploitation
RemediationFixed release identified ↓

Assessment

Why it matters

CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 71.5%; technical severity is CVSS 9.8.

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.

Who should care

  • Teams operating Web Help Desk
  • Vulnerability and exposure management teams
  • Security operations teams monitoring exploitation activity

Response plan

What I would do

  1. Confirm whether Web Help Desk is present in the environment.
  2. Identify affected versions and establish whether vulnerable services are exposed or reachable.
  3. Vendor advisory from www.solarwinds.com
  4. Review relevant security telemetry for evidence of attempted or successful exploitation.
  5. Document the remediation decision and track it to verified completion.

Treatment intelligence

Remediation intelligence

Not yet verified

Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.

Verification noteAutomated link verification has not completed for this guidance yet.

Technical details

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-693
Affected versions
Solarwinds Web Help Desk (End Excluding 2026.1)
Fixed versions
Solarwinds Web Help Desk (Fixed from 2026.1)
Published
28 January 2026
Attack vector
Network
Privileges required
None
User interaction
None

Signal timeline

  1. CVE published
  2. Added to CISA KEV
  3. Latest EPSS score: 71.5%
  4. Signal calculated at 82

External references

Live public intelligence This assessment combines public-source evidence. Validate the affected product, version and exposure against your own environment before making a risk decision.