CVE-2025-20137
Severity
4.7MEDIUM
EPSS
0.1%
top 72.33%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMay 7
Description
A vulnerability in the access control list (ACL) programming of Cisco IOS Software that is running on Cisco Catalyst 1000 Switches and Cisco Catalyst 2960L Switches could allow an unauthenticated, remote attacker to bypass a configured ACL.
This vulnerability is due to the use of both an IPv4 ACL and a dynamic ACL of IP Source Guard on the same interface, which is an unsupported configuration. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. …
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:NExploitability: 2.8 | Impact: 1.4
🔴Vulnerability Details
2CVEList▶
CVE-2025-20137: A vulnerability in the access control list (ACL) programming of Cisco IOS Software that is running on Cisco Catalyst 1000 Switches and Cisco Catalyst↗2025-05-07
GHSA▶
GHSA-x37r-wqwh-97qm: A vulnerability in the access control list (ACL) programming of Cisco IOS Software that is running on Cisco Catalyst 1000 Switches and Cisco Catalyst↗2025-05-07
📋Vendor Advisories
1Cisco▶
Cisco IOS Software on Cisco Catalyst 1000 and 2960L Switches Access Control List Bypass Vulnerability↗2025-05-07