Privilege escalation in Dlink Dcs-825l
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.
Vulnerability class: Privilege Escalation
EPSS: 0.002 (14.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Dlink Dcs-825l
- Dlink Dcs-825l_firmware — versions 1.08.01
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Not Applicable)
- cve@mitre.org (Product)
- cve@mitre.org (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-55582?
- CVE-2025-55582 is a medium-severity vulnerability in Dlink Dcs-825l, classified under Improper Privilege Management. CVSS score: 6.6/10. Published 2025-08-27.
- How severe is CVE-2025-55582?
- Medium severity. CVSS v3 base score is 6.6 out of 10.
- Is CVE-2025-55582 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.