CVE-2021-1591CWE-284

Cisco Nexus 9500 Series Switches Access Control List Bypass Vulnerability

Medium · published August 25, 2021

CVSS v3.1
5.8
EPSS
1%
Percentile
62.4
In the wild
Unconfirmed
What it is

A vulnerability in the EtherChannel port subscription logic of Cisco Nexus 9500 Series Switches could allow an unauthenticated, remote attacker to bypass access control list (ACL) rules that are configured on an affected device. This vulnerability is due to oversubscription of resources that occurs when applying ACLs to port channel interfaces. An attacker could exploit this vulnerability by attempting to access network resources that are protected by the ACL. A successful exploit could allow the attacker to access network resources that would be protected by the ACL that was applied on the port channel interface.

The record
Technical detail
CVSS v3.1
5.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00999 · 62.4th percentile
Weakness
CWE-284 · Improper Access Control
Published
2021-08-25T19:11Z
EPSS history
Timeline
  • 25 AUG 19:11Z
    Cisco Nexus 9500 Series Switches Access Control List Bypass Vulnerability
    cvelistv5