CVE-2026-79911CWE-119CWE-121

CVE-2026-79911

Critical · published August 26, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
65.3
In the wild
Unconfirmed
What it is

A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The affected element is the function setSystemConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument Hostname leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
10.0 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
2026-08-26T03:17Z
References (6)
https://vuldb.com/vuln/395061/cti · [email protected]https://www.totolink.net/ · [email protected]https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TOTOLINK_N600R_cstecgi_strcpy_sprintf_Multi_Function_Stack_Overflow.md · [email protected]https://vuldb.com/cve/CVE-2026-79911 · [email protected]https://vuldb.com/submit/881258 · [email protected]https://vuldb.com/vuln/395061 · [email protected]
EPSS history
Timeline
  • 27 AUG 06:46Z
    EPSS moved — → 1%
    epss
  • 25 AUG 22:15Z
    TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflow
    cvelistv5