CVE-2021-34746 is a critical authentication bypass vulnerability in the TACACS+ AAA feature of Cisco Enterprise NFV Infrastructure Software (NFVIS). An unauthenticated, remote attacker can exploit incomplete input validation in authentication requests to gain administrator access. With a CVSS score of 9.8 (Critical), this vulnerability allows for full compromise of confidentiality, integrity, and availability with low attack complexity. While not listed in CISA KEV, public exploit code is available, and it has garnered significant community discussion and media coverage, indicating a high potential for exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.6.1CPE matchmatch criteria | cpe:2.3:a:cisco:enterprise_nfv_infrastructure_software:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.