CVE-2024-50667
Published: 11 November 2024
Summary
CVE-2024-50667 is a critical-severity Classic Buffer Overflow (CWE-120) vulnerability in Trendnet Tew-820Ap Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 5.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2024-50667 is a stack-based buffer overflow in the boa httpd web server component of the Trendnet TEW-820AP wireless access point running firmware 1.01.B01. The flaw exists in the IPv6 address handling routines exposed at the endpoints /boafrm/formIPv6Addr, /boafrm/formIpv6Setup, and /boafrm/formDnsv6; insufficient validation of supplied IPv6 address values allows an attacker-supplied payload to exceed the allocated stack buffer, triggering CWE-120.
An unauthenticated remote attacker can send a crafted HTTP POST request to any of the affected endpoints and achieve arbitrary code execution or a denial-of-service condition on the device. The vulnerability carries a CVSS 3.1 base score of 9.8, reflecting network attack vector, low complexity, and no required credentials or user interaction.
The vendor’s support page for the TEW-820AP does not list a firmware update that resolves the issue; the public technical report on GitHub provides proof-of-concept details but no official patch guidance.
EPSS for the CVE rose from a low baseline to a peak of 0.1988 (current value 0.1648), indicating measurable post-disclosure exploitation interest that warrants renewed attention from network defenders.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-44993
Vulnerability details
The boa httpd of Trendnet TEW-820AP 1.01.B01 has a stack overflow vulnerability in /boafrm/formIPv6Addr, /boafrm/formIpv6Setup, /boafrm/formDnsv6. The reason is that the check of ipv6 address is not sufficient, which allows attackers to construct payloads for attacks.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack overflow in boa httpd CGI endpoints (/boafrm/formIPv6Addr, /boafrm/formIpv6Setup, /boafrm/formDnsv6) on the public-facing web management interface of Trendnet TEW-820AP allows remote attackers to send crafted IPv6 payloads for potential arbitrary code execution.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.