CVE-2025-40554Public exploitNetwork attack vector

Unauthenticated administrative access via crafted request path

Published Jan 28, 2026 · Updated Jan 28, 2026

Authentication bypass in SolarWinds Web Help Desk 12.8.8 HF1 and earlier allows remote attackers to invoke protected actions. WebObjects session handling accepts a crafted path component to an internal administration endpoint without enforcing the login gate. No credentials or user interaction are required, and exposed actions include authentication, SAML/CAS, and API-key settings.

CVSS severity9.8
Critical
EPSS probability59.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in SolarWinds Web Help Desk 12.8.8 HF1 and earlier allows remote attackers to invoke protected actions. WebObjects session handling accepts a crafted path component to an internal administration endpoint without enforcing the login gate. No credentials or user interaction are required, and exposed actions include authentication, SAML/CAS, and API-key settings.

The record

CVE
CVE-2025-40554
Published
Jan 28, 2026
Updated
Jan 28, 2026
Vendor
SolarWinds
Product
Web Help Desk
Classifications
CWE-1390, CAPEC-115, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.8.8 HF1 and below

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SolarWinds · Web Help Deskversion=12.8.8 HF1 and below

Published CVSS scores

9.8SolarWindsCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1390Weak Authentication
CAPEC-115Authentication Bypass
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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