CVE-2026-19845

HIGH 8.8

TOTOLINK A800R lan.so cstecgi.cgi setStaticDhcpConfig stack-based overflow

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability was determined in TOTOLINK A800R 4.1.2cu.5137_B20200730. This affects the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi of the component lan.so. Executing a manipulation of the argument Comment can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized.

CWE	CWE-121 CWE-119
Vendor	totolink
Product	a800r
Published	Aug 14, 2026
Last Updated	Aug 14, 2026

Stay Ahead of the Next One

Get instant alerts for totolink a800r

Be the first to know when new high vulnerabilities affecting totolink a800r are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

TOTOLINK / A800R

4.1.2cu.5137_B20200730

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/389981 vuldb.com: https://vuldb.com/vuln/389981/cti vuldb.com: https://vuldb.com/cve/CVE-2026-19845 vuldb.com: https://vuldb.com/submit/869454 github.com: https://github.com/panda666-888/vuls/blob/main/totolink/a800r/setStaticDhcpConfig.md totolink.net: https://www.totolink.net/

Credits

🔍 panda_0x1 (VulDB User)