How to fix CVE-2025-55581?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Is Dcs 825L Firmware affected by CVE-2025-55581?

CVE-2025-55581 presents moderate security risk, a improper privilege management vulnerability rated CVSS 7.3. Attackers could escalate their privileges to gain elevated access beyond their authorized level. Proof-of-concept code is publicly available, increasing the risk of exploitation.

CVE-2025-55581

HIGH

2025-08-22 [email protected]

7.3

CVSS 3.1

CVSS Vector

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

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:08 vuln.today

PoC Detected

Sep 12, 2025 - 19:16 vuln.today

Public exploit code

CVE Published

Aug 22, 2025 - 18:15 nvd

HIGH 7.3

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.

Analysis

D-Link DCS-825L firmware version 1.08.01 and possibly prior versions contain an insecure implementation in the mydlink-watch-dog.sh script. Rated high severity (CVSS 7.3), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Technical Context

This vulnerability is classified as Improper Privilege Management (CWE-269), which allows attackers to escalate privileges to gain unauthorized elevated access. 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. Affected products include: Dlink Dcs-825L Firmware. Version information: version 1.08.01.

Affected Products

Dlink Dcs-825L Firmware.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply principle of least privilege, validate privilege transitions, implement proper role separation.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.0

CVSS: +36

POC: +20

CVE-2025-55581 vulnerability details – vuln.today

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CVE-2025-55581

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CVE-2025-55581

CVSS Vector

Lifecycle Timeline

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Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

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External POC / Exploit Code