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Description

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.

PUBLISHED Reserved 2026-07-14 | Published 2026-07-14 | Updated 2026-07-14 | Assigner VulDB




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
CRITICAL: 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
10.0AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Stack-based Buffer Overflow

Memory Corruption

Product status

9.1.0u.6279_B20210910
affected

Timeline

2026-07-14:Advisory disclosed
2026-07-14:VulDB entry created
2026-07-14:VulDB entry last update

Credits

fuguang (VulDB User) reporter

References

vuldb.com/vuln/378248 (VDB-378248 | Totolink NR1800X lighttpd formLogout.htm Form_Logout stack-based overflow) vdb-entry technical-description

vuldb.com/vuln/378248/cti (VDB-378248 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/cve/CVE-2026-15701 (CVE-2026-15701 | CVE Analysis and Report) third-party-advisory

vuldb.com/submit/856136 (Submit #856136 | TOTOLINK TOTOLINK NR1800X V9.1.0u.6279_B20210910 V9.1.0u.6279_B20210910 Buffer Overflow) third-party-advisory

github.com/fu9-dotom/cve/issues/1 exploit issue-tracking

www.totolink.net/ product

cve.org (CVE-2026-15701)

nvd.nist.gov (CVE-2026-15701)

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