CVE-2022-20656
MEDIUMEPSS 74th pctlDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Exploit Intelligence
Elevated risk: more likely to be exploited than 74% of all known CVEs.
References
Related Vulnerabilities
Other CWE-24 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2026-39813 | Critical | 9.8 | 23% | - | Fix |
| CVE-2022-38129 | Critical | 9.8 | 19% | - | - |
| CVE-2025-60344 | High | 8.6 | 10% | - | - |
| CVE-2021-33036 | High | 8.8 | 3.8% | - | Fix |
| CVE-2023-1800 | High | 7.3 | 3.5% | - | - |
| CVE-2024-6746 | Medium | 4.3 | 3.3% | - | - |
Common questions
How do I fix CVE-2022-20656?
No published fix for CVE-2022-20656 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2022-20656 being actively exploited?
Not that we know of. CVE-2022-20656 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.6% is the estimated probability that it will be exploited in the next 30 days. That is higher than 74% of all scored CVEs.
How severe is CVE-2022-20656?
CVE-2022-20656 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-07-31.