CVE-2019-1900: Cisco Integrated Management Controller Unauthenticated Denial of Service Vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% 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-476

Description

A vulnerability in the web server of Cisco Integrated Management Controller (IMC) could allow an unauthenticated, remote attacker to cause the web server process to crash, causing a denial of service (DoS) condition on an affected system. The vulnerability is due to insufficient validation of user-supplied input on the web interface. An attacker could exploit this vulnerability by submitting a crafted HTTP request to certain endpoints of the affected software. A successful exploit could allow an attacker to cause the web server to crash. Physical access to the device may be required for a restart.

Affected products

Cisco Integrated Management Controller: from 4.0.0.0 before 4.0\(2f\) — fixed in 4.0\(2f\)
Cisco Unified Computing System (Managed): 4.0(1c)hs3

How to fix

Upgrade to a fixed version: Cisco Integrated Management Controller 4.0\(2f\). Check the vendor advisory for mitigations.

References

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