SolarWinds Platform (Orion)

CVE-2021-31474: This vulnerability allows remote attackers to execute arbitrary code on affected installations of SolarWind…

This vulnerability allows remote attackers to execute arbitrary code on affected installations of SolarWinds Network Performance Monitor 2020.2.1.

Published

ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityCRITICALCVSS 3.0 9.8
EPSS94%Chance of exploitation in 30 days
Public exploitNot tracked
FixSee advisory

Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.

Affected and fixed versions

Product / branchFixed in
Network Performance Monitor 2020.2See the advisory

Always confirm against the vendor advisory, which lists every fixed hotfix.

What it is

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.

Sources

KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.

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