The Collector Service in SolarWinds Orion Platform before 2020.2.4 uses MSMQ (Microsoft…
Priority HIGH 68CWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-502.
Summary
The Collector Service in SolarWinds Orion Platform before 2020.2.4 uses MSMQ (Microsoft Message Queue) and doesn't set permissions on its private queues. As a result, remote unauthenticated clients can send messages to TCP port 1801 that the Collector Service will process. Additionally, upon processing of such messages, the service deserializes them in insecure manner, allowing remote arbitrary code execution as LocalSystem.
Why it matters now
EPSS 0.36426 98th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:solarwinds:orion_platform:*:*:*:*:*:*:*:* | before 2020.2.4 | Vulnerable | SolarWinds |
- cpe:2.3:a:solarwinds:orion_platform:*:*:*:*:*:*:*:* Versions before 2020.2.4 Vulnerable ·SolarWinds
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-25274
- 2026-10-03 Alias added: GHSA-9r6g-h7wj-fxhp
References
More SolarWinds Orion Platform vulnerabilities
- TI-2020-08199 Authentication bypass in SolarWinds Orion Platform KEVCVSS 3.1CRITICAL 9.8
- TI-2022-17164 SolarWinds Platform Deserialization of Untrusted Data CVSS 3.1HIGH 8.8
- TI-2022-17166 Orion Platform SQL Injection Privilege Escalation Vulnerability CVSS 3.1HIGH 8.8
- TI-2021-14112 Chart Endpoint Deserialization of Untrusted Data Remote Code Execution Vulnerability CVSS 3.1HIGH 8.9
- TI-2021-14109 ActionPluginBaseView Deserialization of Untrusted Data RCE CVSS 3.1HIGH 8.9
- TI-2022-17818 SolarWinds Platform Deserialization of Untrusted Data Vulnerability CVSS 3.1HIGH 7.2
Sources
- CVE-2021-25274 · CVE Program
- CVE-2021-25274 · NVD
- FIRST EPSS
- GHSA-9r6g-h7wj-fxhp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences