CVE-2025-5623: D-Link DIR-816 qosClassifier stack-based overflow

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 18.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-06-05 · updated 2026-06-17
Weakness: CWE-119

Description

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.

Affected products

D-Link DIR-816: 1.10cnb05

References

https://github.com/wudipjq/my_vuln/blob/main/D-Link5/vuln_51/51.md
https://vuldb.com/?ctiid.311109
https://vuldb.com/?id.311109
https://vuldb.com/?submit.589224
https://www.dlink.com/
https://github.com/wudipjq/my_vuln/blob/main/D-Link5/vuln_51/51.md

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