CVE-2019-1938

Cisco UCS Director and Cisco UCS Director Express for Big Data API Authentication Bypass Vulnerability

CRITICAL
9.8
CVSS Score
Published: August 21, 2019 at 06:30 PM UTC
Updated: June 17, 2026 at 02:29 AM UTC
3 products affected across 1 vendorUcs DirectorUcs Director Express for Big DataUnified Computing System Director

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Severity
CRITICAL9.8
Exploit prediction
EPSS 5%
SSVC
No known exploit

Description

A vulnerability in the web-based management interface of Cisco UCS Director and Cisco UCS Director Express for Big Data could allow an unauthenticated, remote attacker to bypass authentication and execute arbitrary actions with administrator privileges on an affected system. The vulnerability is due to improper authentication request handling. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow an unprivileged attacker to access and execute arbitrary actions through certain APIs.

Affected

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

v < 6.7.3.0
Affected range stops below 6.7.3.0, so it looks safe — our inference, not a vendor statement

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

9.8CRITICALcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-287

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