---
cve: "CVE-2025-26399"
severity: "CRITICAL"
cvss: 9.8
epss: "88.3%"
vendor: "SolarWinds"
kev: true
exploited: true
published: "2025-09-23 05:15:35"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T17:33:58+02:00"
---

# CVE-2025-26399

> 9.8 CRITICAL · ⚠️ CISA KEV (183 Tage) · 🔓 Exploited

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <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://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-26399>
- <https://www.microsoft.com/en-us/security/blog/2026/02/06/active-exploitation-solarwinds-web-help-desk/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-26399) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_