CVE-2020-3446

Cisco vWAAS for Cisco ENCS 5400-W Series and CSP 5000-W Series Default Credentials Vulnerability

CRITICAL
9.8
CVSS Score
Published: August 26, 2020 at 04:16 PM UTC
Updated: June 17, 2026 at 03:18 AM UTC
11 products affected across 1 vendorEncs 5408-w FirmwareEncs 5406-w FirmwareCsp 5436-w Firmware

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Severity
CRITICAL9.8
Exploit prediction
EPSS 1%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

cisco-csp-5228-w (same device)
cisco-csp-5436-w (same device)
cisco-encs-5406-w (same device)
cisco-encs-5408-w (same device)
cisco-encs-5412-w (same device)
All versions
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-798

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