CVE-2025-55581
highpriority · track · 0OT risk · elevatedEPSS 0.002 · 8 %ileEURUUSEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.7–7.3
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://cybermaya.in/posts/Post-42/cnnvd
- https://legacy.us.dlink.com/pages/product.aspx?id=f9c0458bfe7b4ff3bf7fad1cf6fcc9a1cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-55581cnnvd
- https://www.dlink.com/en/security-bulletin/cnnvd
- https://cybermaya.in/posts/Post-42/enisa_euvd
- https://legacy.us.dlink.com/pages/product.aspx?id=f9c0458bfe7b4ff3bf7fad1cf6fcc9a1enisa_euvd
- https://www.dlink.com/en/security-bulletin/enisa_euvd
- https://cybermaya.in/posts/Post-42/ExploitThird Party Advisorynvd
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