CVE-2019-1974: Cisco IMC Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data Authentication Bypass Vulnerability

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-08-21 · updated 2026-06-17
Weakness: CWE-287

Description

A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data could allow an unauthenticated, remote attacker to bypass user authentication and gain access as an administrative user. The vulnerability is due to insufficient request header validation during the authentication process. An attacker could exploit this vulnerability by sending a series of malicious requests to an affected device. An exploit could allow the attacker to gain full administrative access to the affected device.

Affected products

Cisco Integrated Management Controller: from 2.2.0.0 through 2.2.0.6; 2.1.0.0
Cisco UCS Director: from 5.5.0.0 through 5.5.0.2; from 6.0.0.0 through 6.0.1.3; from 6.5.0.0 through 6.5.0.3; from 6.6.0.0 through 6.6.1.0; from 6.7.0.0 through 6.7.2.0; 6.7(1.1), 6.7(2.0)
Cisco Ucs Director Express For Big Data: from 2.1.0.0 through 2.1.0.2; from 3.0.0.0 through 3.0.1.3; from 3.5.0.0 through 3.5.0.3; from 3.7.0.0 through 3.7.2.0; 3.6.0.0, 3.6.1.0

References

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