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Back to active CVEs
Critical · CVSS 10.0CVE-2026-79911

TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflowCVE-2026-79911

Answer in brief

CVE-2026-79911 records a Critical severity (CVSS 10.0) vulnerability in TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflow. The current sources do not mark it as known exploited. The current feed maps TOTOLINK/N600R (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 25, 2026Updated Aug 27, 2026Source checked Oct 10, 2026First seen by HOL Aug 25, 2026Material review Aug 27, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 10.0
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 10.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TOTOLINK/N600R (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
TOTOLINK/N600Rgeneric4.3.0cu.7647_B20210106Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for TOTOLINK/N600R.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 27, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 25, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencetotolink.net
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • MariaDB: `qc_info` plugin can do OOB reads if query contains \0Same generic ecosystem
  • MariaDB: mysql_json plugin OOB readsSame generic ecosystem
  • MariaDB: environment injection via wsrep bootstrap in the mariadb.service fileSame generic ecosystem
  • MariaDB Connector/C: libmariadb allowed cleartext password leakage on TLS hostname verification failureSame generic ecosystem
  • x64dbg-MCP Server vulnerable to pre-authentication denial of service through Content-Length integer overflowSame generic ecosystem
  • MariaDB: insufficient validation of binary frm data when opening a tableSame generic ecosystem

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-121, CWE-119
Source
CVE List V5
Source checked
Oct 10, 2026
References
6 linked sources
Open source record