What is CVE-2021-42796?

CVE-2021-42796 is a critical-severity vulnerability in Aveva Edge, classified under OS Command Injection. CVSS score: 9.8/10. Published 2023-12-16.

How severe is CVE-2021-42796?

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

RCE in Aveva Edge

CVE-2021-42796

An issue was discovered in ExecuteCommand() in AVEVA Edge (formerly InduSoft Web Studio) versions R2020 and prior that allows unauthenticated arbitrary commands to be executed.

Vulnerability class: Command Injection (OS Command Injection)

Published 2023-12-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Aveva Edge — versions 2020

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.aveva.com/en/products/edge/ (Product)
www.cisa.gov/news-events/ics-advisories/icsa-22-326-01 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2021-42796?: CVE-2021-42796 is a critical-severity vulnerability in Aveva Edge, classified under OS Command Injection. CVSS score: 9.8/10. Published 2023-12-16.
How severe is CVE-2021-42796?: Critical severity. CVSS v3 base score is 9.8 out of 10.