Security readout for executives and security teams
Plain-English summary
This CVE describes a critical command injection flaw in D-Link DIR-823G firmware v1.0.2. A remote, unauthenticated attacker could send a crafted packet and cause the device to run arbitrary commands, potentially taking full control of the router and affecting confidentiality, integrity, and availability.
Executive priority
Treat confirmed DIR-823G v1.0.2 exposure as urgent. The issue is remotely reachable, unauthenticated, and rated critical, but the supplied evidence does not confirm active exploitation or a named fixed version.
Technical view
CVE-2022-43109 is a CWE-77 command injection issue in SetNetworkTomographySettings on D-Link DIR-823G v1.0.2. The CVSS 3.1 score is 9.8 with network attack vector, low complexity, no privileges, no user interaction, and high CIA impact.
Likely exposure
Exposure is most relevant where D-Link DIR-823G devices running firmware v1.0.2 are reachable over a network. The provided affected metadata is incomplete, so inventory confirmation is required rather than assuming other models or versions are affected.
Exploitation context
The provided sources say arbitrary command execution is possible via a crafted packet. They do not show CISA KEV listing or confirmed active exploitation. No patch version or concrete mitigation is named in the supplied bundle.
Researcher notes
The CVE record is clear on vulnerability class, affected firmware in the description, function name, and CVSS. However, structured affected-product fields are listed as n/a and remediation details are not provided, limiting certainty around version scope and patch status.
Mitigation direction
- Identify any D-Link DIR-823G devices and confirm firmware version.
- Check D-Link security guidance for fixed firmware or official mitigation.
- Remove internet exposure for affected devices where possible.
- Restrict access to trusted management or internal networks only.
- Replace unsupported or unpatchable affected devices.
Validation and detection
- Search asset inventory for D-Link DIR-823G hardware.
- Verify firmware version directly from device administration records.
- Confirm whether any device runs v1.0.2.
- Review perimeter exposure for reachable router services.
- Check D-Link advisories for this CVE before closure.
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.
CWE-77: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution 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-2022-43109 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
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.
Improper Neutralization of Special Elements used in a Command ('Command Injection')
Improper Neutralization of Special Elements used in a Command ('Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.