CVE-2025-55581

State: Published
Severity: 7.3 High
Published: Aug 22, 2025
Updated: Aug 22, 2025
Reserved: Aug 13, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L	CISA-ADP

Weaknesses

CWE-494 Download of Code Without Integrity Check
CWE-306 Missing Authentication for Critical Function
CWE-269 Improper Privilege Management

Affected Products

Product	Versions
n/an/a	n/aAffected

References

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