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TI-2019-01453 Aliases CVE-2019-1830GHSA-w2qg-wq7x-rcmg

Cisco Wireless LAN Controller Locally Significant Certificate Denial of Service Vulnerability

Priority LOW 25CWE-20Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · CNA. Fix status from CNA.

Summary

A vulnerability in Locally Significant Certificate (LSC) management for the Cisco Wireless LAN Controller (WLC) could allow an authenticated, remote attacker to cause the device to unexpectedly restart, which causes a denial of service (DoS) condition. The attacker would need to have valid administrator credentials. The vulnerability is due to incorrect input validation of the HTTP URL used to establish a connection to the LSC Certificate Authority (CA). An attacker could exploit this vulnerability by authenticating to the targeted device and configuring a LSC certificate. An exploit could allow the attacker to cause a DoS condition due to an unexpected restart of the device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01206 68th 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

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Wireless LAN Controller (WLC)8.3—No fix listedCNA
  • Cisco Wireless LAN Controller (WLC) VendorCisco Affected 8.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:*before 8.3.150.0; 8.5.131.0 to before 8.5.140.0; 8.6.101.0 to before 8.8.100.0VulnerableCisco
  • cpe:2.3:a:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:* Versions before 8.3.150.0; 8.5.131.0 to before 8.5.140.0; 8.6.101.0 to before 8.8.100.0 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1830
  2. 2026-10-03 Alias added: GHSA-w2qg-wq7x-rcmg

References

Advisory 1

  • 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