CVE-2026-15701

CRITICAL 9.8

Totolink NR1800X lighttpd formLogout.htm Form_Logout stack-based overflow

CVSS Score

9.8

EPSS Score

0.8%

EPSS Percentile

52th

A weakness has been identified in Totolink NR1800X 9.1.0u.6279_B20210910. Affected by this issue is the function Form_Logout of the file /formLogout.htm of the component lighttpd. This manipulation of the argument Host causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.

CWE	CWE-121 CWE-119
Vendor	totolink
Product	nr1800x
Published	Jul 14, 2026
Last Updated	Jul 15, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/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 / NR1800X

9.1.0u.6279_B20210910

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/378248 vuldb.com: https://vuldb.com/vuln/378248/cti vuldb.com: https://vuldb.com/cve/CVE-2026-15701 vuldb.com: https://vuldb.com/submit/856136 github.com: https://github.com/fu9-dotom/cve/issues/1 totolink.net: https://www.totolink.net/

Credits

🔍 fuguang (VulDB User)