Security readout for executives and security teams
Plain-English summary
CVE-2021-46457 is a reported command injection issue in D-Link DIR-823-Pro firmware v1.0.2. If an attacker can reach the vulnerable Samba user settings path, they may execute arbitrary commands on the device. The provided sources do not confirm active exploitation or a specific vendor fix.
Executive priority
Treat this as a high-priority edge-device risk if the model exists in the environment. Confirm exposure quickly, because router command execution can affect network control and persistence.
Technical view
The CVE describes command injection in the ChgSambaUserSettings function through the samba_name parameter on D-Link DIR-823-Pro v1.0.2. No CVSS score, CWE mapping, patch version, or complete affected-product metadata is present in the source bundle.
Likely exposure
Exposure is most likely limited to D-Link DIR-823-Pro devices running v1.0.2, especially where device administration or Samba-related settings are reachable from untrusted networks or users.
Exploitation context
The bundled CVE data says arbitrary command execution is possible via a parameter. It is not listed in CISA KEV, and the provided sources do not establish active exploitation in the wild.
Researcher notes
Evidence is sparse: the CVE description identifies the function and parameter, but the bundle lacks CVSS, CWE, authentication requirements, attack vector, patch status, and verified exploit telemetry.
Mitigation direction
- Identify DIR-823-Pro devices and confirm firmware versions.
- Check D-Link security guidance and SAP10285 for vendor-supported remediation.
- Restrict administrative access to trusted management networks only.
- Disable Samba or file-sharing features if not required.
- Replace or isolate devices if no supported firmware fix is available.
Validation and detection
- Inventory edge and branch routers for D-Link DIR-823-Pro models.
- Verify whether any devices run firmware v1.0.2.
- Confirm management and Samba settings are not internet-exposed.
- Review device logs for unexpected configuration changes or command-like artifacts.
- Track D-Link advisories for patch, support, or end-of-life status.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-46457 mapping review
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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/pjqwudi/my_vuln/blob/main/D-link/vuln_23/23.mdCVE reference · x_refsource_MISC
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10285CVE 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.