CVE-2026-79912Public exploitNetwork attack vector

Remote command execution via unsanitized NTP server

Published Aug 25, 2026 · Updated Aug 25, 2026

Command injection in TOTOLINK N600R 4.3.0cu.7647_B20210106 allows remote attackers to execute arbitrary commands through its web interface. The getCurrentTime handler in /cgi-bin/cstecgi.cgi inserts the ntp_server HTTP parameter into an NTP command without neutralizing shell metacharacters, then executes it with popen(). Unauthenticated LAN or WAN access to the management interface is sufficient, and command output returns in the HTTP response, enabling device control and direct data reads.

CVSS severityUnavailable
Unscored
EPSS probability1.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in TOTOLINK N600R 4.3.0cu.7647_B20210106 allows remote attackers to execute arbitrary commands through its web interface. The getCurrentTime handler in /cgi-bin/cstecgi.cgi inserts the ntp_server HTTP parameter into an NTP command without neutralizing shell metacharacters, then executes it with popen(). Unauthenticated LAN or WAN access to the management interface is sufficient, and command output returns in the HTTP response, enabling device control and direct data reads.

The record

CVE
CVE-2026-79912
Published
Aug 25, 2026
Updated
Aug 25, 2026
Vendor
TOTOLINK
Product
N600R
Classifications
CWE-74, CWE-77, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.3.0cu.7647_B20210106

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TOTOLINK · N600Rversion=4.3.0cu.7647_B20210106

Published CVSS scores

7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
6.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P
8.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:P/RL:X/RC:R
8.3VulDBCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:P/RL:X/RC:R

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Injection
CWE-77Command Injection
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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