What’s Vulnerable › Vulnerabilities

CVE-2021-42853: Directory Traversal Delete/Read at AgentDiagnosticServlet

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-03-10 · updated 2026-06-17
• Weakness: CWE-20

Description

It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent's (DSA) AgentDiagnosticServlet has directory traversal vulnerability at the "/api/appInternals/1.0/agent/diagnostic/logs" API. The affected endpoint does not have any input validation of the user's input that allows a malicious payload to be injected.

Affected products

• Aternity SteelCentral AppInternals Dynamic Sampling Agent: from 11.0.0 before 11.8.8; from 12.0.0 before 12.13.0; 10.0.0 — fixed in 11.8.8, 12.13.0

How to fix

Upgrade to a fixed version: Aternity SteelCentral AppInternals Dynamic Sampling Agent 11.8.8, 12.13.0. Check the vendor advisory for mitigations.

References

• https://aternity.force.com/customersuccess/s/article/Directory-Traversal-Delete-Read-at-AgentDiagnosticServlet-CVE-2021-42853
• https://aternity.force.com/customersuccess/s/article/Directory-Traversal-Delete-Read-at-AgentDiagnosticServlet-CVE-2021-42853

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