CVE-2025-55581: D-Link DCS-825L firmware version 1.08.01 and possibly prior versions contain an insecure implementation in the

Q: How do I fix CVE-2025-55581?

dcs-825l firmware: upgrade to newer than 1.08.01. Exact commands for each OS are on this page.

Q: Is CVE-2025-55581 being exploited?

CVE-2025-55581 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-55581 affect?

CVE-2025-55581 affects dcs-825l firmware. Severity is high (CVSS 7.3). 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

Q: How urgent is CVE-2025-55581?

Priority 33/100. High severity; Public exploit reference

Routine

HIGH 7.3UPGRADE

CVE-2025-55581 is a high-severity flaw (CVSS 7.3) affecting dcs-825l firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 s

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-269, CWE-306, CWE-494
Published	2025-08-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dlink

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-22 18:15 UTCPublished CVE record published
2026-06-17 09:41 UTCUpdated Record last modified

dlink dcs-825l firmware UPGRADE

Affected: <= 1.08.01

Fixed in: newer than 1.08.01

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-55581?

dcs-825l firmware: upgrade to newer than 1.08.01. Exact commands for each OS are on this page.

Is CVE-2025-55581 being exploited?

CVE-2025-55581 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-55581 affect?

CVE-2025-55581 affects dcs-825l firmware. Severity is high (CVSS 7.3). 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

How urgent is CVE-2025-55581?

Priority 33/100. High severity; Public exploit reference

Software pages

D-Link vulnerabilities

Related CVEs

CVE-2025-55582 MEDIUM 6.6 MITIGATE D-Link DCS-825L firmware v1.08.01 contains a vulnerability in the watchdog script `mydlink-watch-dog.sh`, whic

References

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