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Vulnerabilities

Vulnerability · CVE-2025-5623

A vulnerability was found in D-Link DIR-816 1.10CNB05.

Published Jun 5, 2025 · catalog updated Jun 5, 2025 · D-Link DIR-816

Check this week

CVE-2025-5623 is not in CISA KEV. FIRST estimates a 18.53% chance of exploitation in the next 30 days. Check whether you run D-Link DIR-816.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
18.53%
Remediation
Vendor / distro source
Affected products
vendor D-Link DIR-816 1.10CNB05

A vulnerability was found in D-Link DIR-816 1.10CNB05. It has been classified as critical. This affects the function qosClassifier of the file /goform/qosClassifier. The manipulation of the argument dip_address/sip_address leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor D-Link DIR-816 1.10CNB051.10CNB05

How to fix CVE-2025-5623

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-5623 is not in CISA KEV. FIRST estimates a 18.53% chance of exploitation in the next 30 days. Check whether you run D-Link DIR-816.

Which versions are affected?

Compare what you have installed with D-Link DIR-816 1.10CNB05 1.10CNB05. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 18.53%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 5, 2025 · EUVD

    Detected

    A vulnerability was found in D-Link DIR-816 1.10CNB05. It has been classified as critical. This affects the function qosClassifier of the file /goform/qosClassifier. The manipulation of the argument dip_address/sip_address leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affec

  2. Jun 5, 2025 · EUVD

    Updated

    A vulnerability was found in D-Link DIR-816 1.10CNB05. It has been classified as critical. This affects the function qosClassifier of the file /goform/qosClassifier. The manipulation of the argument dip_address/sip_address leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affec

Sources

  • CVE.orgVulnerability recordCVE-2025-5623

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-5623

    30-day exploitation probability 18.5%

    first.org
  • EUVDVulnerability recordEUVD-2025-16940

    A vulnerability was found in D-Link DIR-816 1.10CNB05. It has been classified as critical. This affects the function qosClassifier of the file /goform/qosClassifier. The manipulation of the argument dip_address/sip_address leads to stack-based buffer overflow. It is possible to i

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.