Skip to content
Noroxi
CVE-2013-1235· NVD / CVE Program· CNA cisco

Cisco Wireless LAN Controller (WLC) devices do not properly address the resource consumption of terminated TELNET sessions, which allows rem

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.

MediumCVSS 5.0 · v2.0—No exploit No fix recorded
Published
May 3, 2013
Updated
Jun 16, 2026
EPSS
1.2% · 68th percentile
CWE
—
Follow this CVE

Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.

Report tools

JSON

Action score

20

Monitor

Low priority for now.

CVSS
20 / 40 · 5.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

Affected systems

VendorProduct
cisco2000 wireless lan controller
cisco2100 wireless lan controller
cisco2106 wireless lan controller
cisco2112 wireless lan controller
cisco2125 wireless lan controller
cisco2500 wireless lan controller
cisco2504 wireless lan controller
cisco4100 wireless lan controller
cisco4400 wireless lan controller
cisco4402 wireless lan controller
cisco4404 wireless lan controller
cisco5500 wireless lan controller

and 4 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • cisco 2000 wireless lan controllerall versions
  • cisco 2100 wireless lan controllerall versions
  • cisco 2106 wireless lan controllerall versions
  • cisco 2112 wireless lan controllerall versions
  • cisco 2125 wireless lan controllerall versions
  • cisco 2500 wireless lan controllerall versions
  • cisco 2504 wireless lan controllerall versions
  • cisco 4100 wireless lan controllerall versions
  • cisco 4400 wireless lan controllerall versions
  • cisco 4402 wireless lan controllerall versions
  • cisco 4404 wireless lan controllerall versions
  • cisco 5500 wireless lan controllerall versions
  • cisco 7500 wireless lan controllerall versions
  • cisco 8500 wireless lan controllerall versions
  • cisco airespace 4000 wireless lan controllerall versions
  • cisco wireless lan controllerall versions

Same product

cisco: all records

Other highest-scoring records for the same primary product.

  • CVE-2013-1104The HTTP Profiling functionality on Cisco Wireless LAN Controller (WLC) devices with software 7.3.101.0 allows remote authenticated users to
    37Monitor
  • CVE-2007-2038The Network Processing Unit (NPU) in the Cisco Wireless LAN Controller (WLC) before 3.2.193.5, 4.0.x before 4.0.206.0, and 4.1.x allows remo
    24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
None
Integrity impact
None
Availability impact
P

Weakness class (CWE)

—

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records