VulnerabilityDeferred
CVE-2026-79911
A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106.
CRITICAL 9.3EPSS 0.64%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 4.0
- 9.3 CRITICALCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.64% probability · 49th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119, CWE-121
- Source
- cna@vuldb.com
References
- https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TOTOLINK_N600R_cstecgi_strcpy_sprintf_Multi_Function_Stack_Overflow.md
- https://vuldb.com/cve/CVE-2026-79911
- https://vuldb.com/submit/881258
- https://vuldb.com/vuln/395061
- https://vuldb.com/vuln/395061/cti
- https://www.totolink.net/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.