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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (13.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Dlink Dcs-825l
- Dlink Dcs-825l Firmware — versions 1.08.01
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.dlink.com/en/security-bulletin/ (Not Applicable)
- supportannouncement.us.dlink.com/security/publication.aspx (Product)
- cybermaya.in/posts/Post-43/ (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.