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CVE Record

CVE-2021-42627: The WAN configuration page "wan.htm" on D-Link DIR-615 devices with firmware 20.06 can be accessed directly...

The WAN configuration page "wan.htm" on D-Link DIR-615 devices with firmware 20.06 can be accessed directly without authentication which can lead to disclose the information about WAN settings and also leverage attacker to modify the data fields of page.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

A D-Link DIR-615 router running firmware 20.06 may expose its WAN configuration page without login. Someone who can reach the router web interface could view WAN settings and may change page fields, risking internet connectivity, routing, or configuration confidentiality.

Executive priority

Prioritize review where these routers support business connectivity or are reachable from the internet. The risk is not KEV-confirmed, but unauthenticated configuration access on a perimeter device can create avoidable outage and exposure risk.

Technical view

The reported issue is improper access control on wan.htm for D-Link DIR-615 firmware 20.06. The CVE description says the page is directly accessible without authentication and can disclose WAN settings or allow field modification. No CVSS score, CWE, concrete patch version, or vendor-specific advisory detail is provided in the bundle.

Likely exposure

Most likely exposure is DIR-615 firmware 20.06 devices whose administrative web interface is reachable from an untrusted network, including exposed remote management or hostile LAN segments.

Exploitation context

The bundle does not show CISA KEV listing or confirmed active exploitation. A public GitHub reference exists, but this analysis does not rely on exploit steps. Practical risk depends on whether attackers can reach the router web interface.

Researcher notes

Evidence is thin: the CVE record names wan.htm, DIR-615 firmware 20.06, information disclosure, and field modification. The bundle does not include CVSS, CWE, affected CPEs, patch metadata, or a detailed vendor bulletin entry.

Mitigation direction

  • Identify any D-Link DIR-615 devices running firmware 20.06.
  • Disable WAN-side or remote administrative access where enabled.
  • Restrict router administration to trusted management networks.
  • Check D-Link security guidance for fixed firmware or replacement advice.
  • Replace unsupported devices if no maintained firmware is available.

Validation and detection

  • Inventory router model and firmware from trusted administration records.
  • Confirm whether administrative HTTP interfaces are reachable from untrusted networks.
  • Review router configuration for remote management exposure.
  • Check D-Link advisories for this model and firmware.
  • Monitor configuration changes to WAN settings where logging exists.
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

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CVE-2021-42627 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
3Timeline events
1ADP providers
3Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

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  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

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ADP provider summaries

CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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