Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
SolarWinds Web Help Desk Deserialization of Untrusted Data Privilege Escalation Vulnerability
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U H H H 9.8 .8833 99.8 YES
AFFECTED
Product Versions Fixed
Web Help Desk 12.8.7 and below – —
TIMELINE
Feb 8 Reserved by SolarWinds
Mar 9 Added to CISA KEV, remediation due 2026-03-12
Mar 9 Published (CNA: SolarWinds)
Description
SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of CVE-2024-28988, which in turn is a patch bypass of CVE-2024-28986.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| February 8, 2025 | Reserved | Reserved by SolarWinds |
| March 9, 2026 | KEV ADDED | Added to CISA KEV, remediation due 2026-03-12 |
| March 9, 2026 | Published | Published (CNA: SolarWinds) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| SolarWinds | Web Help Desk | — | 12.8.7 and below | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-26399 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.