CVE-2021-31474

CRITICAL

Solarwinds Network Performance Monitor - Insecure Deserialization

Title source: rule

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.

References (2)

[Release Notes, Vendor Advisory] https://documentation.solarwinds.com/en/success_center/sam/content/release_notes/sam_2020-2-5_release_notes.htm

[Third Party Advisory, VDB Entry] https://www.zerodayinitiative.com/advisories/ZDI-21-602/

Scores

CVSS v3 9.8

EPSS 0.5363

EPSS Percentile 98.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-502

Status published

Affected Products (1)

solarwinds/network_performance_monitor < 2020.2.5

Timeline

Published May 21, 2021

Tracked Since Feb 18, 2026