Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-79911

CVE-2026-79911CRITICAL

TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflow

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   H   H   H    9.3   .0110   64.4     —

AFFECTED
  Product  Versions                  Fixed
  N600R    4.3.0cu.7647_B20210106 –  —

TIMELINE
  Aug 25  Reserved by VulDB
  Aug 25  Published (CNA: VulDB)
  Aug 26  EXPLOIT PUBLISHED — CVE-2026-79911 (TOTOLINK N600R). Public exploit reference added.
  Aug 27  EXPLOIT PUBLISHED — CVE-2026-79911 (TOTOLINK N600R). Public exploit reference added.

CWE-119, CWE-121 · CNA: VulDB · CVSS v4.0 · 6 references · NVD status: Deferred

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
August 25, 2026	Reserved	Reserved by VulDB
August 25, 2026	Published	Published (CNA: VulDB)
August 26, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-79911 (TOTOLINK N600R). Public exploit reference added.
August 27, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-79911 (TOTOLINK N600R). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
TOTOLINK	N600R	—	4.3.0cu.7647_B20210106	—

Weaknesses

CWE-119 · CWE-121

References (6)

Authoritative record: CVE-2026-79911 at cve.org

Vendors: totolink

Weaknesses: CWE-119 · CWE-121

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-79911 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.