CVE-2021-42854 is a critical directory traversal vulnerability affecting the PluginServlet in Riverbed SteelCentral AppInternals Dynamic Sampling Agent (DSA) at the "/api/appInternals/1.0/plugin/pmx" API endpoint. With a CVSS score of 9.8, this flaw allows unauthenticated attackers to inject malicious payloads due to a lack of input validation, potentially leading to complete compromise of confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there is minimal community discussion, its critical severity warrants immediate attention. There is no evidence of active exploitation or inclusion in CISA's KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 11.0.0, < 11.8.8CPE matchmatch criteria | cpe:2.3:a:riverbed:steelcentral_appinternals_dynamic_sampling_agent:*:*:*:*:*:*:*:* | ||
>= 12.0.0, < 12.13.0CPE matchmatch criteria | cpe:2.3:a:riverbed:steelcentral_appinternals_dynamic_sampling_agent:*:*:*:*:*:*:*:* | ||
10.0.0CPE matchmatch criteria | cpe:2.3:a:riverbed:steelcentral_appinternals_dynamic_sampling_agent:10.0.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.