CVE-2013-1235

Name: CVE-2013-1235
Creator: NVD / NIST
Published: 2013-05-04T03:24:41.72+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.23%

Last modified Jun 16, 2026

CVE-2013-1235 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.23% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

1.23%

65.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Cisco	2000 Wireless Lan Controller	All versions
Cisco	2100 Wireless Lan Controller	All versions
Cisco	2106 Wireless Lan Controller	All versions
Cisco	2112 Wireless Lan Controller	All versions
Cisco	2125 Wireless Lan Controller	All versions
Cisco	2500 Wireless Lan Controller	All versions
Cisco	2504 Wireless Lan Controller	All versions
Cisco	4100 Wireless Lan Controller	All versions
Cisco	4400 Wireless Lan Controller	All versions
Cisco	4402 Wireless Lan Controller	All versions
Cisco	4404 Wireless Lan Controller	All versions
Cisco	5500 Wireless Lan Controller	All versions
Cisco	7500 Wireless Lan Controller	All versions
Cisco	8500 Wireless Lan Controller	All versions
Cisco	Airespace 4000 Wireless Lan Controller	All versions
Cisco	Wireless Lan Controller	All versions

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1235Vendor Advisory
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1235Vendor Advisory

Timeline

Published: May 4, 2013
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-1235?

How severe is CVE-2013-1235?

Severity scoring for CVE-2013-1235 is pending analysis. The EPSS model estimates a 1.23% probability of exploitation in the next 30 days.

How do I fix CVE-2013-1235?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-1235?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST