Insecure Deserialization of untrusted data causing Remote code execution vulnerability.
Priority HIGH 77CWE-502Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.
Summary
Insecure Deseralization of untrusted data remote code execution vulnerability was discovered in Patch Manager Orion Platform Integration module and reported to us by ZDI. An Authenticated Attacker could exploit it by executing WSAsyncExecuteTasks deserialization of untrusted data.
Why it matters now
EPSS 0.72792 99th percentileScored 2026-11-07
Fix Fixed Orion Platform (SolarWinds): 2020.2.6
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 |
|---|---|---|---|---|---|
| SolarWinds | Orion Platform | 2020.2.5 and previous versions to before 2020.2.6 | 2020.2.6 | Patch available | CNA |
- Orion Platform VendorSolarWinds Affected 2020.2.5 and previous versions to before 2020.2.6 Fixed in 2020.2.6 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:solarwinds:patch_manager:*:*:*:*:*:*:*:* | up to 2020.2.5 | Vulnerable | SolarWinds |
- cpe:2.3:a:solarwinds:patch_manager:*:*:*:*:*:*:*:* Versions up to 2020.2.5 Vulnerable ·SolarWinds
Remediation
- Fix · CNA Orion Platform (SolarWinds) Fixed in 2020.2.6
Timeline
- 2026-10-02 Threatist record created from CVE-2021-35217
- 2026-10-03 Alias added: GHSA-mr2h-fcf6-jvx9
References
Advisory 4
- https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm
- https://documentation.solarwinds.com/en/success_center/orionplatform/content/release_notes/orion_platform_2020-2-6_release_notes.htm
- https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35217
- https://www.zerodayinitiative.com/advisories/ZDI-21-1247/
More SolarWinds Patch Manager vulnerabilities
- TI-2021-14110 Deserialization of Untrusted Data in Resource Controls Remote Code Execution CVSS 3.1HIGH 8.9
- TI-2021-08780 Deserialization of untrusted data in SolarWinds Patch Manager CVSS 3.1HIGH 7.8
Sources
- CVE-2021-35217 · CVE Program
- CVE-2021-35217 · NVD
- FIRST EPSS
- GHSA-mr2h-fcf6-jvx9 · GitHub Advisory Database · CC BY 4.0
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