CVE-2021-35217 in the critical feed json
Insecure Deserialization of untrusted data causing Remote code execution vulnerability.
published 2021-09-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21860
- cvss
- 8.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 72.8%
- EPSS 72.8% chance of exploitation in 30 days, percentile 99.4%
- public exploits
- 0
- none known
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.
Patch / fix
- SolarWinds Orion Platform 2020.2.6
Exploit prediction
72.79% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.9 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Affected products
- SolarWinds Orion Platform
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
documentation.solarwinds.com
/en/success_center/orionplatform/content/core-secure-configuration.htm
vendor-advisory
-
documentation.solarwinds.com
/en/success_center/orionplatform/content/release_notes/orion_platform_2020-2-6_release_notes.htm
release-notes, vendor-advisory
-
solarwinds.com
/trust-center/security-advisories/cve-2021-35217
vendor-advisory
-
zerodayinitiative.com
/advisories/ZDI-21-1247/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-35217
- NVD CVE-2021-35217
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