Cisco Wireless LAN Controller AireOS Software FIPS Mode Denial of Service Vulnerability

published 2022-09-30 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-26019

cvss: 7.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits: 0; none known

A vulnerability in the authentication functionality of Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient error validation. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to cause the wireless LAN controller to crash, resulting in a DoS condition. Note: This vulnerability affects only devices that have Federal Information Processing Standards (FIPS) mode enabled.

Patch / fix

fixed in 1

cisco wireless_lan_controller_software 8.10.171.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-11-06)

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.4	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NVD	3.1	6.5	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Cisco Cisco Wireless LAN Controller (WLC)

Classification

Weakness

CWE-787 Out-of-bounds Write

References

tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-wlc-dos-mKGRrsCB
vendor-advisory

Sources

CVE List CVE-2022-20769
NVD CVE-2022-20769

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Summary