CVE-2021-1592

MEDIUM

Cisco Unified Computing System < 4.0\(4m\) - Denial of Service

Title source: rule
STIX 2.1

Description

A vulnerability in the way Cisco UCS Manager software handles SSH sessions could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper resource management for established SSH sessions. An attacker could exploit this vulnerability by opening a significant number of SSH sessions on an affected device. A successful exploit could allow the attacker to cause a crash and restart of internal Cisco UCS Manager software processes and a temporary loss of access to the Cisco UCS Manager CLI and web UI. Note: The attacker must have valid user credentials to authenticate to the affected device.

Scores

CVSS v3 4.3
EPSS 0.0042
EPSS Percentile 61.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-770 CWE-664
Status published
Products (1)
cisco/unified_computing_system 4.0 - 4.0\(4m\)
Published Aug 25, 2021
Tracked Since Feb 18, 2026