Vulnerability · Published Aug 16, 2026 · Assigned by VulDB

CVE-2026-19961Edimax EW-7478APC formWlSiteSurvey buffer overflow

Critical 9.9

In plain English

A critical-severity buffer overflow in EW-7478APC from Edimax. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)0.8%top 43.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was detected in Edimax EW-7478APC 1.04. Affected is the function formWlSiteSurvey of the file /goform/formWlSiteSurvey. Performing a manipulation of the argument selSSID results in buffer overflow. The attack is possible to be carried out 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	EW-7478APC	1.04

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

References

VDB-391138 | Edimax EW-7478APC formWlSiteSurvey buffer overflow vdb-entry, technical-description
VDB-391138 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-19961 | CVE Analysis and Report third-party-advisory
Submit #872875 | EDIMAX EW-7478APC EW-7478APC 1.04 Buffer Overflow third-party-advisory
https://lavender-bicycle-a5a.notion.site/EDIMAX-EW-7478APC-formWlSiteSurvey-34b53a41781f804fb328d87416095401?source=copy_link exploit