CVE-2021-42854
Directory Traversal Read/Write/Delete at PluginServlet
It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent's (DSA) PluginServlet has directory traversal vulnerabilities at the "/api/appInternals/1.0/plugin/pmx" API. The affected endpoint does not have any input validation of the user's input that allows a malicious payload to be injected.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Directory Traversal Read/Write/Delete at PluginServlet
It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent's (DSA) PluginServlet has directory traversal vulnerabilities at the "/api/appInternals/1.0/plugin/pmx" API. The affected endpoint does not have any input validation of the user's input that allows a malicious payload to be injected.
- Record
CVE-2021-42854- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2021-29809
It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent's (DSA) PluginServlet has directory traversal vulnerabilities at the "/api/appInternals/1.0/plugin/pmx" API. The affected endpoint does not have any input validation of the user's input that allows a malicious payload to be injected.
- Record
EUVD-2021-29809- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6p9c-r989-4c78
It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent's (DSA) PluginServlet...
It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent's (DSA) PluginServlet has directory traversal vulnerabilities at the "/api/appInternals/1.0/plugin/pmx" API. The affected endpoint does not have any input validation of the user's input that allows a malicious payload to be injected.
- Record
GHSA-6p9c-r989-4c78- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-22
- Updated
- 2026-11-02
NVD
It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent's (DSA) PluginServlet has directory traversal vulnerabilities at the "/api/appInternals/1.0/plugin/pmx" API. The affected endpoint does not have any input validation of the user's input that allows a malicious payload to be injected.
- Record
CVE-2021-42854- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-20, CWE-22
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-42854 is a critical vulnerability (CVSS 9.8) in Aternity Steelcentral Appinternals Dynamic Sampling Agent, published March 9, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.57%, the 75th percentile. No source names a fixed version.