CVE-2020-3446: Cisco vWAAS for Cisco ENCS 5400-W Series and CSP 5000-W Series Default Credentials Vulnerability

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-08-26 · updated 2026-06-17
Weakness: CWE-798

Description

A vulnerability in Cisco Virtual Wide Area Application Services (vWAAS) with Cisco Enterprise NFV Infrastructure Software (NFVIS)-bundled images for Cisco ENCS 5400-W Series and CSP 5000-W Series appliances could allow an unauthenticated, remote attacker to log into the NFVIS CLI of an affected device by using accounts that have a default, static password. The vulnerability exists because the affected software has user accounts with default, static passwords. An attacker with access to the NFVIS CLI of an affected device could exploit this vulnerability by logging into the CLI. A successful exploit could allow the attacker to access the NFVIS CLI with administrator privileges.

Affected products

Cisco Csp 5228-W Firmware: 6.4(1), 6.4(3d)
Cisco Csp 5436-W Firmware: 6.4(1), 6.4(3d)
Cisco Encs 5406-W Firmware: 6.4(1), 6.4(3d)
Cisco Encs 5408-W Firmware: 6.4(1), 6.4(3d)
Cisco Encs 5412-W Firmware: 6.4(1), 6.4(3d)

References

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