CVE-2025-40552
CriticalPublic exploitSolarWinds Web Help Desk was found to be susceptible to an authentication bypass vulnerability that if exploited, would allow a malicious actor to execute actions and methods that should be protected by authentication.
Published Feb 9, 2026 · Updated Feb 27, 2026
Key Facts
Patch immediately- CVE-2025-40552 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Web Help Desk (Solarwinds).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 52% probability of exploitation in the next 30 days.
- Fixed versions are available, including Web Help Desk 2026.1.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
52%
Higher than 98.9% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
SolarWinds Web Help Desk was found to be susceptible to an authentication bypass vulnerability that if exploited, would allow a malicious actor to execute actions and methods that should be protected by authentication.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Web Help DeskSolarwinds | >= 12.8.8 HF1 and below | 2026.1 |
Patched Releases
Web Help Desk
2026.1
Timeline
Publicly disclosed
Feb 9, 2026
Last updated
Feb 27, 2026
Weakness Type
- CWE-1390 Weak Authentication
References
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-40551
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-40552
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-40553
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-40554
- advisoryhttps://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40552
FAQ
Common Questions.
SolarWinds Web Help Desk was found to be susceptible to an authentication bypass vulnerability that if exploited, would allow a malicious actor to execute actions and methods that should be protected by authentication.
Affected: Web Help Desk (Solarwinds) versions >= 12.8.8 HF1 and below. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Web Help Desk 2026.1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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