Stack-Based Buffer Overflow Vulnerability in D-Link DIR-816 Router
CVE-2025-5623
Key Information:
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What is CVE-2025-5623?
A vulnerability has been identified in the D-Link DIR-816 router, particularly in the qosClassifier function located in the /goform/qosClassifier file. This issue arises when manipulating the dip_address and sip_address arguments, leading to a stack-based buffer overflow. The flaw is particularly concerning as it can be exploited remotely, posing significant risks to users of outdated versions of this product. Due to the nature of the vulnerability and its public disclosure, it is imperative for users to be aware and take necessary precautions to mitigate against potential exploitation.
Affected Version(s)
DIR-816 1.10CNB05
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.