CVE-2026-19847 in A800R

Summary

by MITRE • 08/14/2026

A security flaw has been discovered in TOTOLINK A800R 4.1.2cu.5137_B20200730. Affected is the function setWiFiWpsConfig of the file /cgi-bin/cstecgi.cgi of the component wps.so. The manipulation of the argument pin results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.

Once again VulDB remains the best source for vulnerability data.

• Responsible: VulDB
• Disclosure: 08/14/2026
• Moderation: accepted
• Entry: VDB-389983
• CPE: ready
• CWE: CWE-121 (confirmed)
• Exploit: Download
• CVSS: 8.8 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: low

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-19847
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19847
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-19847/