CVE-2013-1235

Cisco Wireless LAN Controller (WLC) devices do not properly address the resource consumption of terminated TELNET sessions, which allows remote attackers to cause a denial of service (TELNET outage) by making many TELNET connections and improperly ending these connections, aka Bug ID CSCug35507.

Published: 2013-05-04 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-1235 is rated Moderate Risk (43.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.23%). 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-2013-1235

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 0.47% 1.23% +0.76%
2 2025-03-17 0.16% 0.47% +0.31%
3 2024-09-17 — 0.16% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-1235

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
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:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2013-1235

Affected software / configurations for CVE-2013-1235

Vendor Product Version Raw CPE
cisco 2000_wireless_lan_controller — cpe:2.3:h:cisco:2000_wireless_lan_controller:*:*:*:*:*:*:*:*
cisco 2100_wireless_lan_controller — cpe:2.3:h:cisco:2100_wireless_lan_controller:*:*:*:*:*:*:*:*
cisco 2106_wireless_lan_controller — cpe:2.3:h:cisco:2106_wireless_lan_controller:-:*:*:*:*:*:*:*
cisco 2112_wireless_lan_controller — cpe:2.3:h:cisco:2112_wireless_lan_controller:-:*:*:*:*:*:*:*
cisco 2125_wireless_lan_controller — cpe:2.3:h:cisco:2125_wireless_lan_controller:-:*:*:*:*:*:*:*
cisco 2500_wireless_lan_controller — cpe:2.3:h:cisco:2500_wireless_lan_controller:-:*:*:*:*:*:*:*
cisco 2504_wireless_lan_controller — cpe:2.3:h:cisco:2504_wireless_lan_controller:-:*:*:*:*:*:*:*
cisco 4100_wireless_lan_controller — cpe:2.3:h:cisco:4100_wireless_lan_controller:*:*:*:*:*:*:*:*
cisco 4400_wireless_lan_controller — cpe:2.3:h:cisco:4400_wireless_lan_controller:*:*:*:*:*:*:*:*
cisco 4402_wireless_lan_controller — cpe:2.3:h:cisco:4402_wireless_lan_controller:*:*:*:*:*:*:*:*
cisco 4404_wireless_lan_controller — cpe:2.3:h:cisco:4404_wireless_lan_controller:*:*:*:*:*:*:*:*
cisco 5500_wireless_lan_controller — cpe:2.3:h:cisco:5500_wireless_lan_controller:-:*:*:*:*:*:*:*
cisco 7500_wireless_lan_controller — cpe:2.3:h:cisco:7500_wireless_lan_controller:-:*:*:*:*:*:*:*
cisco 8500_wireless_lan_controller — cpe:2.3:h:cisco:8500_wireless_lan_controller:-:*:*:*:*:*:*:*
cisco airespace_4000_wireless_lan_controller — cpe:2.3:h:cisco:airespace_4000_wireless_lan_controller:*:*:*:*:*:*:*:*
cisco wireless_lan_controller — cpe:2.3:h:cisco:wireless_lan_controller:*:*:*:*:*:*:*:*

References for CVE-2013-1235

cvelogic Threat Intelligence