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TI-2025-35047 Aliases CVE-2025-55581GHSA-289x-93wc-65xg

D-Link DCS-825L firmware version 1.08.01 and possibly prior versions contain an insecure…

Priority HIGH 65CWE-269Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation, Security bypass, Code execution
Confidentiality · integrity · availability
High · High · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-269, CWE-306 and CWE-494.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00188 8th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:dlink:dcs-825l_firmware:*:*:*:*:*:*:*:*up to 1.08.01VulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dcs-825l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
  • cpe:2.3:o:dlink:dcs-825l_firmware:*:*:*:*:*:*:*:* Versions up to 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

  1. 2026-10-02 Threatist record created from CVE-2025-55581
  2. 2026-10-03 Alias added: GHSA-289x-93wc-65xg

References

Exploit 1

Other 2

  • TI-2025-35048 D-Link DCS-825L firmware v1.08.01 contains a vulnerability in the watchdog script… CVSS 3.1MEDIUM 6.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences