D-Link DCS-825L firmware version 1.08.01 and possibly prior versions contain an insecure implementation in the mydlink-watch-dog.sh script. The script monitors and respawns the `dcp` and `signalc` binaries without validating their integrity, origin, or permissions. An attacker with filesystem access (e.g., via UART or firmware modification) may replace these binaries to achieve persistent arbitrary code execution with root privileges. The issue stems from improper handling of executable trust and absence of integrity checks in the watchdog logic.
History

Sat, 23 Aug 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared D-link
D-link dcs-825l
Vendors & Products D-link
D-link dcs-825l

Fri, 22 Aug 2025 19:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-269
CWE-306
CWE-494
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 22 Aug 2025 18:00:00 +0000

Type Values Removed Values Added
Description D-Link DCS-825L firmware version 1.08.01 and possibly prior versions contain an insecure implementation in the mydlink-watch-dog.sh script. The script monitors and respawns the `dcp` and `signalc` binaries without validating their integrity, origin, or permissions. An attacker with filesystem access (e.g., via UART or firmware modification) may replace these binaries to achieve persistent arbitrary code execution with root privileges. The issue stems from improper handling of executable trust and absence of integrity checks in the watchdog logic.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-08-22T18:36:28.102Z

Reserved: 2025-08-13T00:00:00.000Z

Link: CVE-2025-55581

cve-icon Vulnrichment

Updated: 2025-08-22T18:35:47.814Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-08-22T18:15:35.857

Modified: 2025-08-25T20:24:45.327

Link: CVE-2025-55581

cve-icon Redhat

No data.