What is CVE-2021-32977?

CVE-2021-32977 is a high-severity vulnerability in Aveva System Platform, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.2/10. Published 2022-04-04.

How severe is CVE-2021-32977?

High severity. CVSS v3 base score is 7.2 out of 10.

Vulnerability in Aveva System Platform

CVE-2021-32977

AVEVA System Platform versions 2017 through 2020 R2 P01 does not verify, or incorrectly verifies, the cryptographic signature for data.

Published 2022-04-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (49.8th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Aveva System Platform — versions 2017
Aveva System Platform — versions 2020

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

www.cisa.gov/uscert/ics/advisories/icsa-21-180-05 (US Government Resource, Third Party Advisory)
www.aveva.com/content/dam/aveva/documents/support/cyber-security-updates/Securi… (Vendor Advisory)

Frequently asked questions

What is CVE-2021-32977?: CVE-2021-32977 is a high-severity vulnerability in Aveva System Platform, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.2/10. Published 2022-04-04.
How severe is CVE-2021-32977?: High severity. CVSS v3 base score is 7.2 out of 10.