What is CVE-2021-31474?

CVE-2021-31474 is a critical-severity vulnerability in Solarwinds Network Performance Monitor, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-05-21.

How severe is CVE-2021-31474?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-31474 known to be exploited?

7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Solarwinds Network Performance Monitor

CVE-2021-31474

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 withi…

Vulnerability class: Insecure Deserialization

EPSS: 0.536 (98.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Solarwinds Network Performance Monitor — versions 2020.2.1

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

References

www.zerodayinitiative.com/advisories/ZDI-21-602/ (x_refsource_MISC)
documentation.solarwinds.com/en/success_center/sam/content/release_notes/sam_20… (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-31474?: CVE-2021-31474 is a critical-severity vulnerability in Solarwinds Network Performance Monitor, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-05-21.
How severe is CVE-2021-31474?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-31474 known to be exploited?: 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.