PatchTheCVECVE-2025-40552: SolarWinds Web Help Desk was found to be susceptible to an authentication bypass vulnerability that if exploit
CVE-2025-40552 is a critical-severity flaw (CVSS 9.8) affecting web help desk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- EPSS top 1%: very likely to be exploited
- CISA SSVC: public proof of concept
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 52.0% (top 1%) |
| CISA exploited list | No |
| Weakness | CWE-1390 |
| Published | 2026-01-28 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: watchtowrlabs/watchTowr-vs-SolarWinds-WebHelpDesk-CVE-2025-40552-CVE-2025-40553 (4 stars)
- Nuclei scan template: SolarWinds Web Help Desk - Authentication Bypass
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2025-40552?
web help desk: upgrade to 2026.1. Exact commands for each OS are on this page.
Is CVE-2025-40552 being exploited?
CVE-2025-40552 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2025-40552 affect?
CVE-2025-40552 affects web help desk. Severity is critical (CVSS 9.8). 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.
How urgent is CVE-2025-40552?
Priority 70/100. Critical severity; EPSS top 1%: very likely to be exploited; CISA SSVC: public proof of concept; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action
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