TI-2018-00198 Aliases CVE-2018-0235 GHSA-3m6w-w2q4-82mc

Improper input validation in Cisco Wireless LAN Controller

LOW 33CWE-20Published 2018-05-02 · Updated 2024-11-29

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in the 802.11 frame validation functionality of the Cisco Wireless LAN Controller (WLC) could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation of certain 802.11 management information element frames that an affected device receives from wireless clients. An attacker could exploit this vulnerability by sending a malformed 802.11 management frame to an affected device. A successful exploit could allow the attacker to cause the affected device to reload unexpectedly, resulting in a DoS condition. This vulnerability affects only Cisco Wireless LAN Controllers that are running Cisco Mobility Express Release 8.5.103.0. Cisco Bug IDs: CSCvg07024.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00501 43rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	Cisco Wireless LAN Controller	Cisco Wireless LAN Controller	—	No fix listed	CNA

Cisco Wireless LAN Controller Vendor— Affected Cisco Wireless LAN Controller Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:wireless_lan_controller_software:8.6\(1.106\):::::::*	8.6(1.106)	Vulnerable	Cisco
cpe:2.3:o:cisco:wireless_lan_controller_software:8.6\(1.114\):::::::*	8.6(1.114)	Vulnerable	Cisco

cpe:2.3:o:cisco:wireless_lan_controller_software:8.6\(1.106\):*:*:*:*:*:*:* Versions 8.6(1.106) Vulnerable ·Cisco
cpe:2.3:o:cisco:wireless_lan_controller_software:8.6\(1.114\):*:*:*:*:*:*:* Versions 8.6(1.114) Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-0235
2026-10-03 Alias added: GHSA-3m6w-w2q4-82mc

References

Advisory 1

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-mfdos

TI-2019-11388 Cisco Wireless LAN Controller HTTP Parsing Engine Denial of Service Vulnerability CVSS 3.1MEDIUM 6.5
TI-2016-01254 Buffer overflow in the redirection functionality in Cisco Wireless LAN Controller (WLC)… CVSS 3.1CRITICAL 9.8
TI-2018-00213 Resource management flaw in Cisco Wireless LAN Controller CVSS 3.0HIGH 8.6
TI-2007-01958 The SNMP implementation in the Cisco Wireless LAN Controller (WLC) before 20070419 uses… CVSS 2.0HIGH 10.0
TI-2015-05301 Cisco Wireless LAN Controller (WLC) devices with software 7.6.x, 8.0 before 8.0.121.0… CVSS 3.0CRITICAL 9.8
TI-2014-00660 Cisco Wireless LAN Controller (WLC) devices 7.4 before 7.4.110.0 distribute Aironet IOS… CVSS 2.0HIGH 10.0

See all 87 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences