PatchTheCVECVE-2025-40554: SolarWinds Web Help Desk was found to be susceptible to an authentication bypass vulnerability that, if exploi
CVE-2025-40554 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, could allow an attacker to invoke specific actions within Web Help Desk.
Why this priority
- Critical severity
- EPSS top 1%: very likely to be exploited
- 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 | 60.6% (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: imbas007/auth-bypass-CVE-2025-40554 (1 stars)
- GitHub PoC: Skynoxk/CVE-2025-40554 (1 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-2025-40554?
web help desk: upgrade to 2026.1. Exact commands for each OS are on this page.
Is CVE-2025-40554 being exploited?
CVE-2025-40554 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-2025-40554 affect?
CVE-2025-40554 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, could allow an attacker to invoke specific actions within Web Help Desk.
How urgent is CVE-2025-40554?
Priority 67/100. Critical severity; EPSS top 1%: very likely to be exploited; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2026-28323 CRITICAL 9.8 UPGRADE SolarWinds Web Help Desk is found to be affected by a SAML authentication bypass vulnerability
- CVE-2025-26399 CRITICAL 9.8 EXPLOITED UPGRADE SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
- CVE-2026-28299 HIGH 8.2 UPGRADE SolarWinds Web Help Desk is found to be affected by a denial-of-service vulnerability, which when exploited, c
- CVE-2025-40553 CRITICAL 9.8 UPGRADE SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that c
- CVE-2025-40552 CRITICAL 9.8 UPGRADE SolarWinds Web Help Desk was found to be susceptible to an authentication bypass vulnerability that if exploit