CVE-2026-15701CWE-119CWE-121

Totolink NR1800X lighttpd formLogout.htm Form_Logout stack-based overflow

Critical · published July 14, 2026

CVSS v4.0
9.3
EPSS
1%
Percentile
65.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS: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
EPSS
0.01096 · 65.3th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-07-14T16:30Z
EPSS history
Timeline
  • 14 JUL 16:30Z
    Totolink NR1800X lighttpd formLogout.htm Form_Logout stack-based overflow
    cvelistv5