CVE-2025-60331
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-22

Last updated on: 2025-10-24

Assigner: MITRE

Description
D-Link DIR-823G A1 v1.0.2B05 was discovered to contain a buffer overflow in the FillMacCloneMac parameter in the /EXCU_SHELL endpoint. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.
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Meta Information
Published
2025-10-22
Last Modified
2025-10-24
Generated
2026-06-16
AI Q&A
2025-10-22
EPSS Evaluated
2026-06-14
NVD
CVE-2025-60331
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
dlink dir-823g_firmware 1.0.2b05
dlink dir-823g a1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
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Executive Summary

This vulnerability is a buffer overflow in the FillMacCloneMac parameter of the /EXCU_SHELL endpoint in the D-Link DIR-823G A1 v1.0.2B05 device. A buffer overflow occurs when more data is written to a buffer than it can hold, which can cause unexpected behavior or crashes. In this case, an attacker can send specially crafted input to trigger the overflow. [2]

Impact Analysis

The vulnerability allows attackers to cause a Denial of Service (DoS) on the affected device. This means the device could become unresponsive or crash, disrupting network connectivity or device functionality.

Detection Guidance

This vulnerability can be detected by testing the /EXCU_SHELL endpoint with crafted inputs targeting the FillMacCloneMac parameter to check for buffer overflow behavior. A proof-of-concept (PoC) is available on GitHub which can be used to verify the vulnerability. Specific commands or scripts for detection are provided in the PoC repository at https://github.com/z472421519/BinaryAudit/blob/main/PoC/BOF/DIR823G/FillMacCloneMac/FillMacCloneMac.md. [2]

Mitigation Strategies

Immediate mitigation steps include monitoring the D-Link Security Bulletin for any official patches or firmware updates addressing this vulnerability and applying them as soon as they become available. Until a fix is released, restrict access to the /EXCU_SHELL endpoint to trusted users only and consider network-level protections to block malicious crafted inputs targeting the FillMacCloneMac parameter. [1]

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