CVE-2019-15262

HIGH

Cisco 5520/5508 WLC < 8.5.140.0 DoS via SSH Exhaustion

Title source: llm
STIX 2.1

Description

A vulnerability in the Secure Shell (SSH) session management for Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability exists because the SSH process is not properly deleted when an SSH connection to the device is disconnected. An attacker could exploit this vulnerability by repeatedly opening SSH connections to an affected device. A successful exploit could allow the attacker to exhaust system resources by initiating multiple SSH connections to the device that are not effectively terminated, which could result in a DoS condition.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0141
EPSS Percentile 69.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-20 CWE-404
Status published
Products (2)
cisco/5508_wireless_lan_controller_firmware < 8.5.140.0
cisco/5520_wireless_lan_controller_firmware < 8.5.140.0
Published Oct 16, 2019
Tracked Since Feb 18, 2026