CVE-2024-39962
RCE in Dlink Dir-823X Firmware 240126
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2024-39962 is a critical-severity Code Injection (CWE-94) vulnerability in Dlink Dir-823X Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 20% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
D-Link DIR-823X AX3000 Dual-Band Gigabit Wireless Router firmware version v21_D240126 contains a remote code execution vulnerability in the ntp_zone_val parameter processed by the /goform/set_ntp endpoint. The flaw, tracked as CVE-2024-39962 and assigned CWE-94, allows arbitrary code execution through a specially crafted HTTP request and carries a CVSS 3.1 score of 9.8.
An unauthenticated attacker with network access can submit a malicious POST request to the affected endpoint and achieve full control over the device, including the ability to execute arbitrary commands, modify configuration, or pivot into the local network. No user interaction or credentials are required.
Public references consist of a technical write-up and proof-of-concept hosted on GitHub Gist; no vendor advisory or firmware patch is referenced in the available data. The EPSS score has remained flat at 0.0985 since disclosure, indicating steady but not sharply increasing exploitation interest.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-38319
Vulnerability Data
D-Link DIR-823X AX3000 Dual-Band Gigabit Wireless Router v21_D240126 was discovered to contain a remote code execution (RCE) vulnerability in the ntp_zone_val parameter at /goform/set_ntp. This vulnerability is exploited via a crafted HTTP request.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.3.1
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation finds code paths that accept and execute externally influenced strings.
Input validation directly stops untrusted data from being used to construct executable code without neutralization.
Least privilege limits the damage an injected code fragment can perform once executed.
Requiring documented secure development standards and tools enforces use of safe code-generation APIs and escaping.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
PR.PS-06's SDLC practices directly target injection flaws via secure coding and testing (mostly), yet as a single broad outcome it leaves many code-generation specifics unaddressed (partial).
PR.DS-10 protects runtime data confidentiality/integrity but has no bearing on neutralizing externally influenced input during code generation, so neither direction shows any preventive effect.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Banning unapproved code samples and unauthenticated web services, combined with secure-coding standards and SAST, prevents the dynamic generation or inclusion of attacker-supplied code.
Controls that restrict unauthorized or malicious code from being introduced via external networks or removable media limit opportunities for an attacker to inject and execute arbitrary code.