CVE-2025-55581

HIGH EPSS 6.1%
Published Aug 22, 202510mo ago · Modified Jun 17, 20261w ago
7.3 CVSS 3.1
High
Find Similar
Published Aug 22, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.3
Exploitability
1.8
Impact
5.5
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability Low

Threat Intelligence

EPSS Exploit Probability
6.1% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 3

CWE-269 Improper Privilege Management Authorization
CWE-306 Missing Authentication for Critical Function Authentication
CWE-494

Affected Products 2

VendorProductVersionRange
dlinkdcs-825l_firmware* ≤1.08.01
dlinkdcs-825l*any

References 3

  • cybermaya.in https://cybermaya.in/posts/Post-42/
    ExploitThird Party Advisory
  • legacy.us.dlink.com https://legacy.us.dlink.com/pages/product.aspx?id=f9c0458bfe7b4ff3bf7fad1cf6fcc9a1
    Product
  • dlink.com https://www.dlink.com/en/security-bulletin/
    Not Applicable

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.