CVE-2023-49351
CWE-787Published: January 16, 2024· Updated: Jun 17, 2026
Official Description
A stack-based buffer overflow vulnerability in /bin/webs binary in Edimax BR6478AC V2 firmware veraion v1.23 allows attackers to overwrite other values located on the stack due to an incorrect use of the strcpy() function.
Risk Analysis
Edimax BR6478AC V2 firmware is susceptible to a stack-based buffer overflow, which can be triggered remotely. This critical flaw allows attackers to overwrite stack values and potentially execute arbitrary code.
No public exploit is known, and the vulnerability is not in CISA's KEV catalog.
Users should update the device firmware to a version newer than v1.23.
Technical Analysis
CVE-2023-49351 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
All References (2)
Quick Facts
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-49351 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts