D-Link DCS-825L firmware v1.08.01 contains a vulnerability in the watchdog script…
Key facts
- Attack vector
- Physical
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation, Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-269 and CWE-494.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:dlink:dcs-825l_firmware:1.08.01:*:*:*:*:*:*:* | 1.08.01 | Vulnerable | D-Link Japan K.K. |
| cpe:2.3:h:dlink:dcs-825l:-:*:*:*:*:*:*:* | not specified by NVD | Running on | D-Link Japan K.K. |
- cpe:2.3:o:dlink:dcs-825l_firmware:1.08.01:*:*:*:*:*:*:* Versions 1.08.01 Vulnerable ·D-Link Japan K.K.
- cpe:2.3:h:dlink:dcs-825l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-55582
- 2026-10-03 Alias added: GHSA-ccm2-xh6r-r5h7
References
More D-Link Japan K.K. Dcs-825l Firmware vulnerabilities
- TI-2025-35047 D-Link DCS-825L firmware version 1.08.01 and possibly prior versions contain an insecure… CVSS 3.1HIGH 7.3
Sources
- CVE-2025-55582 · CVE Program
- CVE-2025-55582 · NVD
- FIRST EPSS
- GHSA-ccm2-xh6r-r5h7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences