How severe is CVE-2025-40552?

CVE-2025-40552 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-40552 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 50% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-40552?

CVE-2025-40552 affects Solarwinds Web Help Desk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-40552?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-40552 have an EU (EUVD) identifier?

Yes. CVE-2025-40552 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206429.

When was CVE-2025-40552 published?

CVE-2025-40552 was published on 2026-01-28 and last updated on 2026-06-17.

CVE-2025-40552

CVE-2025-40552 is a critical-severity vulnerability in Solarwinds Web Help Desk with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 50% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-1390.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 50% (99th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206429
Weakness: CWE-1390
Affected product: Solarwinds Web Help Desk
Published: 2026-01-28
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-40552?: 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 severe is CVE-2025-40552?: CVE-2025-40552 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-40552 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 50% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-40552?: CVE-2025-40552 affects Solarwinds Web Help Desk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-40552?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-40552 have an EU (EUVD) identifier?: Yes. CVE-2025-40552 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206429.
When was CVE-2025-40552 published?: CVE-2025-40552 was published on 2026-01-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:solarwinds:web_help_desk:*:*:*:*:*:*:*:*

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