Vulnerability · Published May 24, 2026 · Assigned by VulDB

CVE-2026-9399Edimax BR-6675nD POST Request formsetPPPoE buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in BR-6675nD from Edimax. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.4%top 61.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was detected in Edimax BR-6675nD 1.12. This vulnerability affects the function formsetPPPoE of the file /goform/formsetPPPoE of the component POST Request Handler. Performing a manipulation of the argument pppUserName results in buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
Edimax	BR-6675nD	1.12

Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-365380 | Edimax BR-6675nD POST Request formsetPPPoE buffer overflow vdb-entry, technical-description
VDB-365380 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #811561 | EDIMAX BR-6675nD BR-6675nD v1.12 Buffer Overflow third-party-advisory
https://lavender-bicycle-a5a.notion.site/EDIMAX-BR-6675nD-formsetPPPoE-34b53a41781f8025abcded9e7d0734ef?source=copy_link exploit