CVE-2025-40553
9.8
CRITICAL · CVSS 3.1 · EPSS 68% (pctl 99)
Patch early
EPSS 68% — above the 10% action threshold.
Description
SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 67.98% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-502 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2026-01-28 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| solarwinds | web help desk |
References
- https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm
- https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40553
- https://github.com/watchtowrlabs/watchTowr-vs-SolarWinds-WebHelpDesk-CVE-2025-40552-CVE-2025-40553/blob/main/watchTowr-vs-SolarWinds-WebHelpDesk-CVE-2025-40552-CVE-2025-40553.py
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