Security readout for executives and security teams
Plain-English summary
CVE-2021-40654 describes a credential disclosure flaw in D-LINK DIR-615 hardware revision B2 firmware 2.01mt. The public record says an attacker can obtain a username and password by forging a POST request to the getcfg.php page. The sources do not provide CVSS, patch status, or confirmed exploitation.
Executive priority
Treat this as an asset-risk cleanup item, escalating to urgent if any affected router management interface is internet-facing. The main business concern is credential exposure from legacy network edge equipment with incomplete public remediation data.
Technical view
The vulnerability is an information disclosure issue in D-LINK-DIR-615 B2 2.01mt involving getcfg.php. The CVE description indicates credential exposure through a forged POST request. Public metadata lacks CWE mapping, CVSS scoring, detailed prerequisites, and official remediation specifics in the supplied bundle.
Likely exposure
Exposure is most relevant where D-LINK DIR-615 B2 devices running firmware 2.01mt are still deployed, especially if the web administration interface is reachable by untrusted networks. The bundle does not prove broader D-Link product impact.
Exploitation context
The CVE is not listed as KEV in the supplied data. No cited source in the bundle confirms active exploitation. A public GitHub reference exists, but the prompt does not provide enough evidence to characterize real-world exploitation safely.
Researcher notes
Evidence is thin: the CVE names the affected model, revision, firmware, and vulnerable page, but lacks CVSS, CWE, exploit prerequisites, and fix details. Avoid expanding scope beyond DIR-615 B2 2.01mt unless confirmed by vendor or primary evidence.
Mitigation direction
- Inventory DIR-615 B2 devices and confirm firmware versions.
- Check D-Link guidance for official firmware, support, or retirement advice.
- Restrict router administration access to trusted networks only.
- Remove any internet exposure of the management interface.
- Change router credentials after remediation or device replacement.
Validation and detection
- Identify DIR-615 B2 devices running firmware 2.01mt.
- Confirm whether getcfg.php is reachable from untrusted networks.
- Review perimeter rules for exposed router administration services.
- Check D-Link’s security bulletin for applicable guidance.
- Document unsupported devices requiring replacement or isolation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-40654 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dlink.com/en/security-bulletin/CVE reference · x_refsource_MISC
- https://github.com/Ilovewomen/D-LINK-DIR-615CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.