CVE-2021-1389 describes a vulnerability in Cisco IOS XR and NX-OS Software that allows an unauthenticated, remote attacker to bypass IPv6 access control lists (ACLs) on affected devices. This is due to improper processing of crafted IPv6 packets, enabling access to resources that should be protected by the ACL. The vulnerability has a CVSS score of 6.5 (Medium), indicating a low attack complexity and potential for limited confidentiality and integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 6.6.3CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* | ||
7.1.0CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xr:7.1.0:*:*:*:*:*:*:* | ||
7.2.0CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xr:7.2.0:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.