CVE-2026-19961Public exploitNetwork attack vector

Authenticated memory corruption via selSSID overflow

Published Aug 16, 2026 · Updated Aug 16, 2026

Buffer overflow in /goform/formWlSiteSurvey in Edimax EW-7478APC 1.04 allows remote authenticated users to corrupt memory via selSSID. In formWlSiteSurvey, user-controlled selSSID data reaches a strncpy(v4, a1, v2) copy with attacker-influenced length, overrunning the destination buffer. Reachability requires access to the web management interface; the published proof of concept sends an authenticated POST request, and public records do not disclose effects beyond the resulting memory corruption.

CVSS severityUnavailable
Unscored
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Buffer overflow in /goform/formWlSiteSurvey in Edimax EW-7478APC 1.04 allows remote authenticated users to corrupt memory via selSSID. In formWlSiteSurvey, user-controlled selSSID data reaches a strncpy(v4, a1, v2) copy with attacker-influenced length, overrunning the destination buffer. Reachability requires access to the web management interface; the published proof of concept sends an authenticated POST request, and public records do not disclose effects beyond the resulting memory corruption.

The record

CVE
CVE-2026-19961
Published
Aug 16, 2026
Updated
Aug 16, 2026
Vendor
Edimax Technology Co., Ltd.
Product
EW-7478APC
Classifications
CWE-119, CWE-120, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.04

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Edimax Technology Co., Ltd. · EW-7478APCversion=1.04

Published CVSS scores

9.9VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
9.0VulDB CNAAV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
9.9VulDB CNACVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
9.4VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Memory Corruption
CWE-120Buffer Overflow
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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