ASUS RT-AC86U - Buffer Overflow
Description
ASUS RT-AC86U’s specific cgi function has a stack-based buffer overflow vulnerability due to insufficient validation for network packet header length. A remote attacker with administrator privileges can exploit this vulnerability to execute arbitrary system commands, disrupt system or terminate service.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Stack-based buffer overflow in ASUS RT-AC86U CGI function allows authenticated admin to execute arbitrary commands remotely.
Vulnerability
A stack-based buffer overflow vulnerability exists in a specific CGI function of the ASUS RT-AC86U router. The flaw arises from insufficient validation of network packet header length, allowing an attacker to overflow a stack buffer. The affected firmware version is v3.0.0.4.386.51255 [1].
Exploitation
An attacker must have administrator privileges to access the router's management interface. With these privileges, the attacker can send a specially crafted network packet to the vulnerable CGI function, triggering the buffer overflow and overwriting adjacent memory [1].
Impact
Successful exploitation enables arbitrary command execution with root privileges, allowing the attacker to execute system commands, disrupt router operations, or terminate services. This results in full compromise of confidentiality, integrity, and availability [1].
Mitigation
ASUS has not released a specific patched version in the available references. The recommended mitigation is to update the router firmware to the latest version available from ASUS [1].
AI Insight generated on May 25, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1News mentions
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