CVE-2020-15593
CVE-2020-15593 is a high-severity vulnerability in Riverbed Steelcentral Aternity Agent with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 7.2
- EPSS exploit prediction: 0% (34th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Riverbed Steelcentral Aternity Agent
- Published:
- Last modified:
Description
SteelCentral Aternity Agent 11.0.0.120 on Windows mishandles IPC. It uses an executable running as a high privileged Windows service to perform administrative tasks and collect data from other processes. It distributes functionality among different processes and uses IPC (Inter-Process Communication) primitives to enable the processes to cooperate. Any user in the system is allowed to access the interprocess communication channel AternityAgentAssistantIpc, retrieve a serialized object and call object methods remotely. Among others, the methods allow any user to: (1) Create and/or overwrite arbitrary XML files across the system; (2) Create arbitrary directories across the system; and (3) Load arbitrary plugins (i.e., C# assemblies) from the "%PROGRAMFILES(X86)/Aternity Information Systems/Assistant/plugins” directory and execute code contained in them.
Frequently asked questions
- What is CVE-2020-15593?
- SteelCentral Aternity Agent 11.0.0.120 on Windows mishandles IPC. It uses an executable running as a high privileged Windows service to perform administrative tasks and collect data from other processes. It distributes functionality among different processes and uses IPC (Inter-Process Communication) primitives to enable the processes to cooperate. Any user in the system is allowed to access the interprocess communication channel AternityAgentAssistantIpc, retrieve a serialized object and call object methods remotely. Among others, the methods allow any user to: (1) Create and/or overwrite arbitrary XML files across the system; (2) Create arbitrary directories across the system; and (3) Load arbitrary plugins (i.e., C# assemblies) from the "%PROGRAMFILES(X86)/Aternity Information Systems/Assistant/plugins” directory and execute code contained in them.
- How severe is CVE-2020-15593?
- CVE-2020-15593 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-15593 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-15593?
- CVE-2020-15593 affects Riverbed Steelcentral Aternity Agent. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-15593?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-15593 published?
- CVE-2020-15593 was published on 2020-07-27 and last updated on 2026-06-17.
References
- https://aternity.force.com/customersuccess/s/article/Recorder-tool-security-notification-mitigation-steps-for-On-Prem
- https://sec-consult.com/en/blog/advisories/privilege-escalation-vulnerability-in-steelcentral-aternity-agent-cve-2020-15592-cve-2020-15593/
Affected products (1)
- cpe:2.3:a:riverbed:steelcentral_aternity_agent:11.0.0.120:*:*:*:*:*:*:*
More vulnerabilities in Riverbed Steelcentral Aternity Agent
- CVE-2020-15592 — High (CVSS 7.5): SteelCentral Aternity Agent before 11.0.0.120 on Windows allows Privilege Escalation via a crafted file. It uses an…