CVE-2025-55582: dcs-825l Privilege Escalation — Exploit

Description

D-Link DCS-825L firmware v1.08.01 contains a vulnerability in the watchdog script `mydlink-watch-dog.sh`, which blindly respawns binaries such as `dcp` and `signalc` without verifying integrity, authenticity, or permissions. An attacker with local filesystem access (via physical access, firmware modification, or debug interfaces) can replace these binaries with malicious payloads. The script executes these binaries as root in an infinite loop, leading to persistent privilege escalation and arbitrary code execution. This issue is mitigated in v1.09.02, but the product is officially End-of-Life and unsupported.

Is your site exposed to CVE-2025-55582?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

6.6

MEDIUM

CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-269 CWE-269

CWE-494 CWE-494

Affected Products

Vendor	Product	Versions
dlink	dcs-825l_firmware	All
dlink	dcs-825l	All

References

Exploits

https://cybermaya.in/posts/Post-43/

Other References

https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10431 https://www.dlink.com/en/security-bulletin/

Frequently Asked Questions

What is CVE-2025-55582? +

D-Link DCS-825L firmware v1.08.01 contains a vulnerability in the watchdog script `mydlink-watch-dog.sh`, which blindly respawns binaries such as `dcp` and `signalc` without verifying integrity, authenticity, or permissions. An attacker with local filesystem access (via physical access, firmware modification, or debug interfaces) can replace these binaries with malicious payloads. The script executes these binaries as root in an infinite loop, leading to persistent privilege escalation and arbitrary code execution. This issue is mitigated in v1.09.02, but the product is officially End-of-Life and unsupported. It has a CVSS v3.1 base score of 6.6 (MEDIUM).

How severe is CVE-2025-55582? +

CVE-2025-55582 has a CVSS v3.1 score of 6.6 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-55582? +

CVE-2025-55582 affects products from dlink, specifically: dcs-825l, dcs-825l_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-55582? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-9490

A security vulnerability has been identified in Acer Care Center where the ACCSvc service creates a Named Pipe with a …

CVE-2026-9489

NitroSense 3.x before 3.01.3052 contains Local Privilege Escalation (LPE) vulnerability.The program exposes a Windows Named Pipe that uses a custom …

CVE-2026-7483

Local privilege escalation potentially allowed an attacker to write an arbitrary file with fully controlled content as a privileged user.

CVE-2026-12502

Improper Privilege Management (CWE-269) in `/usr/bin/ltsudo` in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on …

CVE-2026-8069

PredatorSense version 3.00.3136 to 3.00.3196 contain Local Privilege Escalation (LPE) vulnerability.The program exposes a Windows Named Pipe that uses a …

CVE-2026-0276

A privilege escalation vulnerability in Palo Alto Networks Cortex® XDR Broker VM enables a locally authenticated user to perform actions …

CVE-2025-55582