LiveActive security incident?Get immediate response
CVE Record

CVE-2021-29295: Null Pointer Dereference vulnerability exists in D-Link DSP-W215 1.10, which could let a remote malicious u...

Null Pointer Dereference vulnerability exists in D-Link DSP-W215 1.10, which could let a remote malicious user cause a denial of servie via usr/bin/lighttpd. It could be triggered by sending an HTTP request without URL in the start line directly to the device. NOTE: The DSP-W215 and all hardware revisions is considered End of Life and as such this issue will not be patched

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This is a remote denial-of-service weakness in an end-of-life D-Link DSP-W215 smart plug. A malformed HTTP request can crash the device's lighttpd component. The public sources say the product will not be patched, so the practical business question is whether any DSP-W215 devices remain deployed or reachable.

Executive priority

Treat this as a targeted cleanup item, not an enterprise-wide emergency. Priority rises if DSP-W215 devices support business-critical operations or are reachable by guests, partners, or the internet. Since the product is end of life and unpatched, replacement is the durable control.

Technical view

CVE-2021-29295 is a null pointer dereference affecting D-Link DSP-W215 firmware 1.10. The issue is triggered by a malformed HTTP start line sent directly to the device and can cause denial of service in usr/bin/lighttpd. The source bundle provides no CVSS score, CWE, patch, or broader affected-product list.

Likely exposure

Exposure is most likely limited to organizations still operating D-Link DSP-W215 devices, especially where the device HTTP service is reachable from untrusted networks. The bundle names DSP-W215 1.10 and notes all hardware revisions are end of life.

Exploitation context

The CVE is not listed as CISA KEV in the bundle, and no cited source states active exploitation. Public details describe the trigger class at a high level, but the evidence provided does not show observed attacks or exploit availability.

Researcher notes

The public record is sparse: no CVSS vector, CWE mapping, or patch is included. Analysis should stay scoped to D-Link DSP-W215 1.10 and the vendor's end-of-life statement unless additional vendor evidence broadens impact.

Mitigation direction

  • Identify and retire any D-Link DSP-W215 devices from production environments.
  • Replace affected devices with supported hardware receiving security updates.
  • Restrict device HTTP access to trusted management networks only.
  • Review D-Link SAP10211 and the security bulletin for vendor guidance.
  • Monitor segmented IoT networks for unexpected device resets or availability loss.

Validation and detection

  • Inventory facilities and networks for D-Link DSP-W215 smart plugs.
  • Confirm firmware versions and hardware revisions for any discovered devices.
  • Check whether device HTTP interfaces are reachable from untrusted networks.
  • Verify segmentation blocks direct access from corporate and internet-facing networks.
  • Record remediation status because the vendor states this product will not be patched.
Prepared
Confidence
medium
Sources
4

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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2021-29295 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
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
3Source 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.