CVE-2023-20057
UNSCOREDDescription
A vulnerability in the URL filtering mechanism of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device. This vulnerability is due to improper processing of URLs. An attacker could exploit this vulnerability by crafting a URL in a particular way. A successful exploit could allow the attacker to bypass the URL reputation filters that are configured for an affected device, which could allow malicious URLs to pass through the device.
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 v3.1 Vector
No CVSS vector data available.
Exploit Intelligence
Moderate risk: more likely to be exploited than 49% of all known CVEs.
References
Related Vulnerabilities
Other CWE-792 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2025-12758 | High | 7.5 | 0.5% | - | Fix |
| CVE-2023-25608 | Medium | 5.5 | 0.5% | - | Fix |
| CVE-2025-47779 | High | 7.7 | 0.5% | - | Fix |
| CVE-2022-22297 | Medium | 5.5 | 0.2% | - | - |
Common questions
How do I fix CVE-2023-20057?
No published fix for CVE-2023-20057 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2023-20057 being actively exploited?
Not that we know of. CVE-2023-20057 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.68% is the estimated probability that it will be exploited in the next 30 days. That is higher than 49% of all scored CVEs.
Embed a live status badge for CVE-2023-20057
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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 2024-11-21.