CVE-2023-20256
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CVSS Score
V3.1EPSS Score
v2025.03.14There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.
Attack Vector Metrics
Impact Metrics
Description
Multiple vulnerabilities in the per-user-override feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured access control list (ACL) and allow traffic that should be denied to flow through an affected device. These vulnerabilities are due to a logic error that could occur when the affected software constructs and applies per-user-override rules. An attacker could exploit these vulnerabilities by connecting to a network through an affected device that has a vulnerable configuration. A successful exploit could allow the attacker to bypass the interface ACL and access resources that would should be protected.
Available Exploits
Related News
Affected Products
Affected Versions:
Affected Versions:
EU Vulnerability Database
Monitored by ENISA for EU cybersecurity
ENISA Analysis
Malicious code in bioql (PyPI)
Affected Products (ENISA)
ENISA Scoring
CVSS Score (3.1)
EPSS Score
ENISA References
Data provided by ENISA EU Vulnerability Database. Last updated: October 3, 2025
GitHub Security Advisories
Community-driven vulnerability intelligence from GitHub
Advisory Details
CVSS Scoring
CVSS Score
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
References
Advisory provided by GitHub Security Advisory Database. Published: November 1, 2023, Modified: November 1, 2023