TI-2019-11388 Aliases CVE-2019-15276 GHSA-6fp6-hh92-h5q5

Cisco Wireless LAN Controller HTTP Parsing Engine Denial of Service Vulnerability

MEDIUM 59CWE-20Published 2019-11-26 · Updated 2024-11-21

Key facts

Attack vector: Network
Privileges required: Low
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 web interface of Cisco Wireless LAN Controller Software could allow a low-privileged, authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability exists due to a failure of the HTTP parsing engine to handle specially crafted URLs. An attacker could exploit this vulnerability by authenticating with low privileges to an affected controller and submitting the crafted URL to the web interface of the affected device. Conversely, an unauthenticated attacker could exploit this vulnerability by persuading a user of the web interface to click the crafted URL. A successful exploit could allow the attacker to cause an unexpected restart of the device, resulting in a DoS condition.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.46305 98th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

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	Cisco Wireless LAN Controller (WLC)	all versions	—	No fix listed	CNA

Cisco Wireless LAN Controller (WLC) VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:wireless_lan_controller_software::::::::	8.4 to before 8.10	Vulnerable	Cisco

cpe:2.3:a:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:* Versions 8.4 to before 8.10 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-15276
2026-10-03 Alias added: GHSA-6fp6-hh92-h5q5

References

Exploit 1

http://packetstormsecurity.com/files/155554/Cisco-WLC-2504-8.9-Denial-Of-Service.html

Advisory 1

20191106 Cisco Wireless LAN Controller HTTP Parsing Engine Denial of Service Vulnerability

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
TI-2011-01426 Unspecified vulnerability in Cisco Wireless LAN Controller (WLC) software 6.0 before… CVSS 2.0HIGH 7.8

See all 87 →

Sources

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