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CVE Record

CVE-2020-26561: Belkin LINKSYS WRT160NL 1.0.04.002_US_20130619 devices have a stack-based buffer overflow vulnerability bec...

Belkin LINKSYS WRT160NL 1.0.04.002_US_20130619 devices have a stack-based buffer overflow vulnerability because of sprintf in create_dir in mini_httpd. Successful exploitation leads to arbitrary code execution. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2020-26561 is a buffer overflow in the unsupported Belkin/Linksys WRT160NL router firmware version 1.0.04.002_US_20130619. Successful exploitation is reported to allow arbitrary code execution. Business urgency is highest where these legacy routers remain deployed, especially if reachable from untrusted networks.

Executive priority

Prioritize remediation where any affected router is still deployed. This is an end-of-support network device issue with reported arbitrary code execution impact, so replacement is the cleanest risk decision. If no affected devices exist, record that finding and monitor legacy asset inventories.

Technical view

The CVE describes a stack-based buffer overflow caused by sprintf usage in create_dir within mini_httpd on Belkin Linksys WRT160NL 1.0.04.002_US_20130619. The stated impact is arbitrary code execution. The record notes the product is no longer supported by the maintainer.

Likely exposure

Exposure is limited to Belkin/Linksys WRT160NL devices running firmware 1.0.04.002_US_20130619. The provided sources do not identify other affected models or supported firmware branches. Organizations are most exposed if legacy routers remain in production or are reachable from untrusted networks.

Exploitation context

The provided CVE data does not show CISA KEV listing or confirmed active exploitation. NCC Group published technical research, and the CVE states successful exploitation leads to arbitrary code execution. Treat public technical detail as increasing validation and remediation urgency, without assuming exploitation in the wild.

Researcher notes

Evidence supports a specific stack buffer overflow in mini_httpd create_dir using sprintf. Affected scope is narrow in the provided data, and no CVSS, CWE, patch, or KEV evidence is provided. Avoid broad product-family assumptions unless verified from additional vendor sources.

Mitigation direction

  • Inventory for Linksys WRT160NL devices and firmware 1.0.04.002_US_20130619.
  • Replace affected unsupported routers with supported hardware.
  • Prevent untrusted network access to affected device services.
  • Check Belkin/Linksys guidance before assuming any firmware fix exists.
  • Prioritize removal where devices protect business-critical networks.

Validation and detection

  • Confirm model and firmware directly from asset records or device administration data.
  • Check external and internal exposure for WRT160NL management or web services.
  • Verify affected devices are not used on sensitive network paths.
  • Review logs or configurations for unexpected administrative changes.
  • Document replacement status and residual temporary exposure.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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Execution behavior lookup

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CVE-2020-26561 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.