SolarWinds Web Help Desk
YES - ON THE CISA KEV LIST
CVE-2025-26399
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
244 days past due
SolarWinds: 11 entries (0.6% of all KEV entries are from this vendor); 4 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
Description
SolarWinds Web Help Desk contain a deserialization of untrusted data vulnerability in AjaxProxy that could allow an attacker to run commands on the host machine.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://www.solarwinds.com/trust-center/security-advisories/cve-2025-26399 ; https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_12-8-7-hotfix-1_release_notes.htm ; https://nvd.nist.gov/vuln/detail/CVE-2025-26399
References
Other KEV entries for this vendor: SolarWinds
- CVE-2026-28318 - Serv-U (2026-06-05)
- CVE-2025-40536 - Web Help Desk (2026-02-12)
- CVE-2025-40551 - Web Help Desk (2026-02-03)
- CVE-2024-28987 - Web Help Desk (2024-10-15)
- CVE-2024-28986 - Web Help Desk (2024-08-15)
- CVE-2024-28995 - Serv-U (2024-07-17)
- CVE-2021-35247 - Serv-U (2022-01-21)
- CVE-2020-10148 - Orion (2021-11-03)
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