Read the docs
TI-2018-00213 Aliases CVE-2018-0252GHSA-rfmq-5r75-j8r9

Resource management flaw in Cisco Wireless LAN Controller

Priority MEDIUM 48CWE-399Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.

Summary

A vulnerability in the IP Version 4 (IPv4) fragment reassembly function of Cisco 3500, 5500, and 8500 Series Wireless LAN Controller Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a corruption of an internal data structure process that occurs when the affected software reassembles certain IPv4 packets. An attacker could exploit this vulnerability by sending certain malformed IPv4 fragments to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. This vulnerability affects all releases of 8.4 until the first fixed release for the 5500 and 8500 Series Wireless LAN Controllers and releases 8.5.103.0 and 8.5.105.0 for the 3500, 5500, and 8500 Series Wireless LAN Controllers. Cisco Bug IDs: CSCvf89222.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0235 83rd 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
Yes
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
—Cisco Wireless LAN ControllerCisco Wireless LAN Controller—No fix listedCNA
  • Cisco Wireless LAN Controller Vendor— Affected Cisco Wireless LAN Controller Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:cisco:wireless_lan_controller_software:8.4\(100.0\):*:*:*:*:*:*:*8.4(100.0)VulnerableCisco
cpe:2.3:o:cisco:wireless_lan_controller_software:8.5\(107.30\):*:*:*:*:*:*:*8.5(107.30)VulnerableCisco
cpe:2.3:o:cisco:wireless_lan_controller_software:8.5\(107.41\):*:*:*:*:*:*:*8.5(107.41)VulnerableCisco
cpe:2.3:o:cisco:wireless_lan_controller_software:8.6\(1.108\):*:*:*:*:*:*:*8.6(1.108)VulnerableCisco
  • cpe:2.3:o:cisco:wireless_lan_controller_software:8.4\(100.0\):*:*:*:*:*:*:* Versions 8.4(100.0) Vulnerable ·Cisco
  • cpe:2.3:o:cisco:wireless_lan_controller_software:8.5\(107.30\):*:*:*:*:*:*:* Versions 8.5(107.30) Vulnerable ·Cisco
  • cpe:2.3:o:cisco:wireless_lan_controller_software:8.5\(107.41\):*:*:*:*:*:*:* Versions 8.5(107.41) Vulnerable ·Cisco
  • cpe:2.3:o:cisco:wireless_lan_controller_software:8.6\(1.108\):*:*:*:*:*:*:* Versions 8.6(1.108) Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-0252
  2. 2026-10-03 Alias added: GHSA-rfmq-5r75-j8r9

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-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