A vulnerability in the web-based management interface of Cisco PI and Cisco EPNM could allow an authenticated, remote attacker to conduct a path traversal attack on an affected device. To exploit this vulnerability, the attacker must have valid credentials on the system. This vulnerability is due to insufficient input validation of the HTTPS URL by the web-based management interface. An attacker could exploit this vulnerability by sending a crafted request that contains directory traversal character sequences to an affected device. A successful exploit could allow the attacker to write arbitrary files to the host system. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
Conclusion & alert: CVE-2022-20656 is rated Low Risk (39.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.18%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-12-24 | 0.13% | 0.18% | +0.04% |
| 2 | 2025-11-21 | 0.17% | 0.13% | -0.04% |
| 3 | 2025-11-18 | — | 0.17% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| cisco | prime_infrastructure | 2.0.0 | cpe:2.3:a:cisco:prime_infrastructure:2.0.0:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 2.1 | cpe:2.3:a:cisco:prime_infrastructure:2.1:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 2.2 | cpe:2.3:a:cisco:prime_infrastructure:2.2:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.0.0 | cpe:2.3:a:cisco:prime_infrastructure:3.0.0:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.1.0 | cpe:2.3:a:cisco:prime_infrastructure:3.1.0:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.1.5 | cpe:2.3:a:cisco:prime_infrastructure:3.1.5:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.2 | cpe:2.3:a:cisco:prime_infrastructure:3.2:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.2.0-fips | cpe:2.3:a:cisco:prime_infrastructure:3.2.0-fips:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.3.0 | cpe:2.3:a:cisco:prime_infrastructure:3.3.0:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.4.0 | cpe:2.3:a:cisco:prime_infrastructure:3.4.0:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.5.0 | cpe:2.3:a:cisco:prime_infrastructure:3.5.0:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.6.0 | cpe:2.3:a:cisco:prime_infrastructure:3.6.0:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.7.0 | cpe:2.3:a:cisco:prime_infrastructure:3.7.0:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.8.0 | cpe:2.3:a:cisco:prime_infrastructure:3.8.0:*:*:*:*:*:*:* |
| cisco | prime_infrastructure | 3.9.0 | cpe:2.3:a:cisco:prime_infrastructure:3.9.0:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 1.1 | cpe:2.3:a:cisco:evolved_programmable_network_manager:1.1:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 1.2 | cpe:2.3:a:cisco:evolved_programmable_network_manager:1.2:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 2.0 | cpe:2.3:a:cisco:evolved_programmable_network_manager:2.0:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 2.1 | cpe:2.3:a:cisco:evolved_programmable_network_manager:2.1:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 2.2 | cpe:2.3:a:cisco:evolved_programmable_network_manager:2.2:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 3.0 | cpe:2.3:a:cisco:evolved_programmable_network_manager:3.0:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 3.0.1 | cpe:2.3:a:cisco:evolved_programmable_network_manager:3.0.1:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 3.0.2 | cpe:2.3:a:cisco:evolved_programmable_network_manager:3.0.2:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 3.0.3 | cpe:2.3:a:cisco:evolved_programmable_network_manager:3.0.3:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 3.1 | cpe:2.3:a:cisco:evolved_programmable_network_manager:3.1:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 3.1.1 | cpe:2.3:a:cisco:evolved_programmable_network_manager:3.1.1:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 3.1.2 | cpe:2.3:a:cisco:evolved_programmable_network_manager:3.1.2:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 3.1.3 | cpe:2.3:a:cisco:evolved_programmable_network_manager:3.1.3:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 4.0 | cpe:2.3:a:cisco:evolved_programmable_network_manager:4.0:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 4.0.1 | cpe:2.3:a:cisco:evolved_programmable_network_manager:4.0.1:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 4.0.2 | cpe:2.3:a:cisco:evolved_programmable_network_manager:4.0.2:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 4.0.3 | cpe:2.3:a:cisco:evolved_programmable_network_manager:4.0.3:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 4.1 | cpe:2.3:a:cisco:evolved_programmable_network_manager:4.1:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 4.1.1 | cpe:2.3:a:cisco:evolved_programmable_network_manager:4.1.1:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 5.0 | cpe:2.3:a:cisco:evolved_programmable_network_manager:5.0:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 5.0.1 | cpe:2.3:a:cisco:evolved_programmable_network_manager:5.0.1:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 5.0.2 | cpe:2.3:a:cisco:evolved_programmable_network_manager:5.0.2:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 5.1 | cpe:2.3:a:cisco:evolved_programmable_network_manager:5.1:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 5.1.1 | cpe:2.3:a:cisco:evolved_programmable_network_manager:5.1.1:*:*:*:*:*:*:* |
| cisco | evolved_programmable_network_manager | 5.1.2 | cpe:2.3:a:cisco:evolved_programmable_network_manager:5.1.2:*:*:*:*:*:*:* |