TI-2021-13745 Aliases CVE-2021-34746 GHSA-hjrv-6xv3-c6x3

Cisco Enterprise NFV Infrastructure Software Authentication Bypass Vulnerability

HIGH 66CWE-289Published 2021-09-02 · Updated 2024-11-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

A vulnerability in the TACACS+ authentication, authorization and accounting (AAA) feature of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an unauthenticated, remote attacker to bypass authentication and log in to an affected device as an administrator. This vulnerability is due to incomplete validation of user-supplied input that is passed to an authentication script. An attacker could exploit this vulnerability by injecting parameters into an authentication request. A successful exploit could allow the attacker to bypass authentication and log in as an administrator to the affected device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.17661 97th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Enterprise NFV Infrastructure Software	all versions	—	No fix listed	CNA

Cisco Enterprise NFV Infrastructure Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:enterprise_nfv_infrastructure_software::::::::	before 4.6.1	Vulnerable	Cisco

cpe:2.3:a:cisco:enterprise_nfv_infrastructure_software:*:*:*:*:*:*:*:* Versions before 4.6.1 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-34746
2026-10-03 Alias added: GHSA-hjrv-6xv3-c6x3

References

Exploit 1

https://github.com/orangecertcc/security-research/security/advisories/GHSA-gqx8-c4xr-c664

Advisory 1

20210901 Cisco Enterprise NFV Infrastructure Software Authentication Bypass Vulnerability

TI-2025-23504 Erlang/OTP SSH Vulnerable to Pre-Authentication RCE KEVCVSS 3.1CRITICAL 10.0
TI-2020-03016 Cisco Integrated Management Controller Multiple Remote Code Execution Vulnerabilities CVSS 3.1CRITICAL 9.8
TI-2022-05339 Cisco Enterprise NFV Infrastructure Software Vulnerabilities CVSS 3.1CRITICAL 9.9
TI-2022-05338 Cisco Enterprise NFV Infrastructure Software Vulnerabilities CVSS 3.1CRITICAL 9.9
TI-2022-05336 Cisco Enterprise NFV Infrastructure Software Vulnerabilities CVSS 3.1CRITICAL 9.9
TI-2019-01517 Cisco Enterprise NFV Infrastructure Software VNC Authentication Bypass Vulnerability CVSS 3.1CRITICAL 9.8

See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences