CVE-2021-1389
Description
A vulnerability in the IPv6 traffic processing of Cisco IOS XR Software and Cisco NX-OS Software for certain Cisco devices could allow an unauthenticated, remote attacker to bypass an IPv6 access control list (ACL) that is configured for an interface of an affected device. The vulnerability is due to improper processing of IPv6 traffic that is sent through an affected device. An attacker could exploit this vulnerability by sending crafted IPv6 packets that traverse the affected device. A successful exploit could allow the attacker to access resources that would typically be protected by the interface ACL.
Risk Information
Base Score
6.5
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS Score
Exploitation Probability
0.383
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Cisco IOS XR and Cisco NX-OS Software IPv6 Access Control List Bypass Vulnerability For Cisco NX-OS Software | NCM |
| Cisco IOS XR and Cisco NX-OS Software IPv6 Access Control List Bypass Vulnerability | NCM |
| CVE-2021-1389 | NCM |
Patch Details
Click to see the patches provided by ManageEngine for this CVE
| Patch ID | Patch Description |
|---|---|
| PATCH-1706149 | Security Update for Cisco NX-OS Software 4.1(3a)UCSM |
References
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234