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Vulnerability record · CVE-2014-3291 · published 8 June 2014

CVE-2014-3291: Cisco wireless lan controller improper input validation vulnerability

Cisco · Wireless Lan Controller

Cisco Wireless LAN Controller (WLC) devices allow remote attackers to cause a denial of service (NULL pointer dereference and device restart) via a zero value in Cisco Discovery Protocol packet data that is not properly handled during SNMP polling, aka Bug ID CSCuo12321.

5.7 CVSS 2.0 Medium EPSS 1.0% · top 38.0% CWE-20 · Improper input validation
5.7CVSS 2.0 base score
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

Cisco Wireless LAN Controller (WLC) devices allow remote attackers to cause a denial of service (NULL pointer dereference and device restart) via a zero value in Cisco Discovery Protocol packet data that is not properly handled during SNMP polling, aka Bug ID CSCuo12321.

AV:A/AC:M/Au:N/C:N/I:N/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://secunia.com/advisories/57895 Permissions Required
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3291 Vendor Advisory
http://tools.cisco.com/security/center/viewAlert.x?alertId=34558 Vendor Advisory
http://www.securityfocus.com/bid/67926 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1030410 Third Party AdvisoryVDB Entry
http://secunia.com/advisories/57895 Permissions Required
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3291 Vendor Advisory
http://tools.cisco.com/security/center/viewAlert.x?alertId=34558 Vendor Advisory
http://www.securityfocus.com/bid/67926 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1030410 Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2014-0703Cisco wireless lan controller software race condition vulnerabilityCisco Wireless LAN Controller (WLC) devices 7.4 before 7.4.110.0 distribute Aironet IOS software with a race condition in the status of the administr…EPSS 2.0%8.6CVE-2020-3560Cisco wireless lan controller uncontrolled resource consumption vulnerabilityA vulnerability in Cisco Aironet Access Points (APs) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) on an affecte…EPSS 1.4%8.6CVE-2020-3559Cisco wireless lan controller uncontrolled resource consumption vulnerabilityA vulnerability in Cisco Aironet Access Point (AP) Software could allow an unauthenticated, remote attacker to cause an affected device to reload. Th…EPSS 1.4%7.8CVE-2018-0417Cisco wireless lan controller software permissions and access controls vulnerabilityA vulnerability in TACACS authentication with Cisco Wireless LAN Controller (WLC) Software could allow an authenticated, local attacker to perform ce…EPSS 3.2%7.8CVE-2014-0706Cisco wireless lan controller software vulnerabilityCisco Wireless LAN Controller (WLC) devices 7.2 before 7.2.115.2, 7.3, and 7.4 before 7.4.110.0 allow remote attackers to cause a denial of service (…EPSS 1.3%7.8CVE-2014-0707Cisco wireless lan controller software vulnerabilityCisco Wireless LAN Controller (WLC) devices 7.2, 7.3, and 7.4 before 7.4.110.0 allow remote attackers to cause a denial of service (device restart) v…EPSS 1.3%7.4CVE-2020-3552Cisco wireless lan controller null pointer dereference vulnerabilityA vulnerability in the Ethernet packet handling of Cisco Aironet Access Points (APs) Software could allow an unauthenticated, adjacent attacker to ca…EPSS 0.49%7.1CVE-2015-0622Cisco wireless lan controller improper input validation vulnerabilityThe Wireless Intrusion Detection (aka WIDS) functionality on Cisco Wireless LAN Controller (WLC) devices allows remote attackers to cause a denial of…EPSS 1.4%

Source: NIST National Vulnerability Database (record CVE-2014-3291), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.