Which products and versions are affected by CVE-2021-31474?

Affected: Network Performance Monitor (Solarwinds) versions >= 2020.2.1. The full list is in the CVE brief.

Is CVE-2021-31474 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2021-31474 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2021-31474?

No public exploit code is known.

Is there a fix for CVE-2021-31474?

Fixed versions are available, including Network Performance Monitor 2020.2.5.

How urgently should CVE-2021-31474 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Request A Demo

Vulnerability Intelligence

CVE-2021-31474

Critical

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

Published May 24, 2021 · Updated Aug 3, 2024 · Also known as TR-21-0397

Key Facts

Patch immediately

CVE-2021-31474 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Network Performance Monitor (Solarwinds).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 94% probability of exploitation in the next 30 days.
Fixed versions are available, including Network Performance Monitor 2020.2.5.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

9.8

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

EPSS (30-day exploit likelihood)

94%

Higher than 99.8% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2021-31474 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
Network Performance MonitorSolarwinds	>= 2020.2.1	2020.2.5

Patched Releases

Network Performance Monitor

2020.2.5

Timeline

Publicly disclosed
May 24, 2021
Last updated
Aug 3, 2024

Weakness Type

CWE-502 Deserialization of Untrusted Data

References

FAQ

Common Questions.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of SolarWinds Network Performance Monitor 2020.2.1.
Affected: Network Performance Monitor (Solarwinds) versions >= 2020.2.1. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Network Performance Monitor 2020.2.5.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2021-31474 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.