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CVE-2025-6931: A vulnerability classified as problematic was found in D-Link DCS-6517 and DCS-7517 up to 2.02.0

44
This week
LOW 3.7REMOTEUPGRADEUPGRADE

CVE-2025-6931 is a low-severity flaw (CVSS 3.7) affecting dcs-6517 firmware, dcs-7517 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability classified as problematic was found in D-Link DCS-6517 and DCS-7517 up to 2.02.0. Affected by this vulnerability is the function generate_pass_from_mac of the file /bin/httpd of the component Root Password Generation Handler. The manipulation leads to insufficient entropy. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the

Why this priority

  • Public exploit reference
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score3.7 (Low)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededNone
User interactionNone
EPSS exploit chance2.2% (top 17%)
CISA exploited listNo
WeaknessCWE-330, CWE-331
Published2025-06-30
Last modified2026-06-17
Publisher (CNA): VulDB · Vendor: dlink

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

Am I affected?

Timeline

dlink dcs-6517 firmware UPGRADE
Affected: <= 2.02.0
Fixed in: newer than 2.02.0
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.
dlink dcs-7517 firmware UPGRADE
Affected: <= 2.02.0
Fixed in: newer than 2.02.0
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-2025-6931?

dcs-6517 firmware: upgrade to newer than 2.02.0; dcs-7517 firmware: upgrade to newer than 2.02.0. Exact commands for each OS are on this page.

Is CVE-2025-6931 being exploited?

CVE-2025-6931 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-2025-6931 affect?

CVE-2025-6931 affects dcs-6517 firmware, dcs-7517 firmware. Severity is low (CVSS 3.7). A vulnerability classified as problematic was found in D-Link DCS-6517 and DCS-7517 up to 2.02.0. Affected by this vulnerability is the function generate_pass_from_mac of the file /bin/httpd of the component Root Password Generation Handler

How urgent is CVE-2025-6931?

Priority 44/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Apache HTTP Server vulnerabilities · D-Link vulnerabilities

References

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