CVE-2021-35215
ActionPluginBaseView Deserialization of Untrusted Data RCE
Insecure deserialization leading to Remote Code Execution was detected in the Orion Platform version 2020.2.5. Authentication is required to exploit this vulnerability.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
ActionPluginBaseView Deserialization of Untrusted Data RCE
Insecure deserialization leading to Remote Code Execution was detected in the Orion Platform version 2020.2.5. Authentication is required to exploit this vulnerability.
- Record
CVE-2021-35215- CVSS 3.1
- 8.9 High
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L - Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2021-21858
Insecure deserialization leading to Remote Code Execution was detected in the Orion Platform version 2020.2.5. Authentication is required to exploit this vulnerability.
- Record
EUVD-2021-21858- CVSS 3.1
- 8.9 High
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qgvw-v9xq-rjp9 No score
Insecure deserialization leading to Remote Code Execution was detected in the Orion Platform...
Insecure deserialization leading to Remote Code Execution was detected in the Orion Platform version 2020.2.5. Authentication is required to exploit this vulnerability.
- Record
GHSA-qgvw-v9xq-rjp9- Weakness
- CWE-502
- Updated
- 2026-11-02
NVD
Insecure deserialization leading to Remote Code Execution was detected in the Orion Platform version 2020.2.5. Authentication is required to exploit this vulnerability.
- Record
CVE-2021-35215- CVSS 3.1
- 8.9 High
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | Y4er/CVE-2021-35215 | 2021-10-23 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-35215 is a high vulnerability (CVSS 8.9) in Solarwinds Orion Platform, published September 1, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 69.9%, the 99th percentile. No source names a fixed version.
References
documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm
solarwinds.com/trust-center/security-advisories/cve-2021-35215
documentation.solarwinds.co/enm/success_center/orionplatform/content/release_notes/orion_platform_2020-2-6_release_notes.htm
zerodayinitiative.com/advisories/ZDI-21-1245
nvd.nist.gov/vuln/detail/CVE-2021-35215
github.com/advisories/GHSA-qgvw-v9xq-rjp9