What is CVE-2021-42786?

CVE-2021-42786 is a critical-severity vulnerability in Aternity Steelcentral Appinternals Dynamic Sampling Agent, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2022-03-10.

How severe is CVE-2021-42786?

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

Improper input validation in Aternity Steelcentral Appinternals Dynamic Sampling Agent

CVE-2021-42786

It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent (DSA) has Remote Code Execution vulnerabilities in multiple instances of the API requests. The affected endpoints do not have any input validation of the user's input that allowed a malicious payload to be injected.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2022-03-10 · 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: 0.021 (80.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Aternity Steelcentral Appinternals Dynamic Sampling Agent — versions 10.x, 12.13.0, 11.8.8
Riverbed Steelcentral Appinternals Dynamic Sampling Agent — versions 10.0.0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

aternity.force.com/customersuccess/s/article/Remote-Code-Execution-at-AgentCont… (Third Party Advisory)

Frequently asked questions

What is CVE-2021-42786?: CVE-2021-42786 is a critical-severity vulnerability in Aternity Steelcentral Appinternals Dynamic Sampling Agent, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2022-03-10.
How severe is CVE-2021-42786?: Critical severity. CVSS v3 base score is 9.8 out of 10.