CVE-2021-1591
Cisco Nexus 9500 Series Switches Access Control List Bypass Vulnerability
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 5.8EPSS 1.0%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
25 Aug 2021Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Affected products
Cisco · Cisco NX-OS SoftwareWant to know if your infrastructure is exposed to this?
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