vulnerability
SolarWinds Orion Platform: RCE via Actions and JSON Deserialization (CVE-2021-31474)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 10 | (AV:N/AC:L/Au:N/C:C/I:C/A:C) | Apr 7, 2026 | Apr 7, 2026 | Apr 7, 2026 |
Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
Apr 7, 2026
Added
Apr 7, 2026
Modified
Apr 7, 2026
Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of SolarWinds Network Performance Monitor 2020.2.1. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SolarWinds.Serialization library. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-12213.
Solution
solarwinds-orion-platform-upgrade-latest
References
- CVE-2021-31474
- https://attackerkb.com/topics/CVE-2021-31474
- CWE-502
- EUVD-EUVD-2021-18374
- https://documentation.solarwinds.com/en/success_center/sam/content/release_notes/sam_2020-2-5_release_notes.htm
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-18374
- https://www.zerodayinitiative.com/advisories/ZDI-21-602/
Rapid7 Labs
2026 Global Threat Landscape Report
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