CVE-2015-6311

Cisco Wireless LAN Controller (WLC) devices with software 7.0(240.0), 7.3(101.0), and 7.4(1.19) allow remote attackers to cause a denial of service (device outage) by sending malformed 802.11i management data to a managed access point, aka Bug ID CSCub65236.

Published: 2015-10-08 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-6311 is rated Moderate Risk (42.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.77%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-6311

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.26% 0.77% +0.51%
2 2025-06-21 0.68% 0.26% -0.42%
3 2025-03-30 — 0.68% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-6311

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.1 2.0 MEDIUM
AV:A/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 6.5 6.9 [email protected]

Weakness enumeration for CVE-2015-6311

Affected software / configurations for CVE-2015-6311

Vendor Product Version Raw CPE
cisco wireless_lan_controller 7.0\(240.0\) cpe:2.3:a:cisco:wireless_lan_controller:7.0\(240.0\):*:*:*:*:*:*:*
cisco wireless_lan_controller 7.3\(101.0\) cpe:2.3:a:cisco:wireless_lan_controller:7.3\(101.0\):*:*:*:*:*:*:*
cisco wireless_lan_controller 7.4\(1.19\) cpe:2.3:a:cisco:wireless_lan_controller:7.4\(1.19\):*:*:*:*:*:*:*

References for CVE-2015-6311

cvelogic Threat Intelligence