CVE-2025-29040
Published: 17 April 2025
Summary
CVE-2025-29040 is a critical-severity OS Command Injection (CWE-78) vulnerability in Dlink Dir-823X Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 10.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2025-29040 is an OS command injection vulnerability (CWE-78) in D-Link DIR 823x devices running firmware version 240802. The flaw resides in the handling of the target_addr key value passed to the function at address 0x41737c and carries a CVSS 3.1 base score of 9.8.
Unauthenticated attackers with network access can supply a malicious target_addr value to execute arbitrary code on the device without user interaction, resulting in full control over confidentiality, integrity, and availability.
D-Link publishes a security bulletin at https://www.dlink.com/en/security-bulletin/ while public proof-of-concept repositories demonstrate the injection via the diag_ping endpoint.
The EPSS score rose from a lower baseline to a peak of 0.0879 on 2026-06-04 before receding to the current value of 0.0476, indicating a period of increased exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-11478
Vulnerability details
An issue in dlink DIR 823x 240802 allows a remote attacker to execute arbitrary code via the target_addr key value and the function 0x41737c
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.