Cyber Resilience

CVE-2026-6025

HighRCE

Published: 10 April 2026

Published
10 April 2026
Modified
27 April 2026
KEV Added
—
Patch
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CVSS Score v4 8.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0300 85.6th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-6025 is a high-severity Command Injection (CWE-77) vulnerability in Totolink A7100RU (inferred from references). Its CVSS base score is 8.9 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 14.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and AC-3 (Access Enforcement).

Deeper analysis

A vulnerability was identified in the Totolink A7100RU router running firmware version 7.4cu.2313_b20191024. The issue resides in the setSyslogCfg function of the /cgi-bin/cstecgi.cgi file within the CGI Handler component, where improper handling of the enable argument permits OS command injection. The flaw is tracked under CWE-77 and CWE-78 and carries a CVSS 4.0 score of 8.9.

The attack can be launched remotely by an unauthenticated adversary who supplies a crafted request to the affected CGI endpoint. Successful exploitation grants the ability to execute arbitrary operating-system commands on the device. A public exploit for this issue has been disclosed.

The EPSS score remains low, moving only from 0.0122 to a peak of 0.0125. No vendor advisory or patch information is provided in the available references.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

A vulnerability was identified in Totolink A7100RU 7.4cu.2313_b20191024. This affects the function setSyslogCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument enable leads to os command injection. It is possible to launch the attack…

more

remotely. The exploit is publicly available and might be used.

CWE(s)
CWE-77CWE-78

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
Why these techniques?

Unauthenticated OS command injection via public-facing web CGI interface directly enables T1190 (Exploit Public-Facing Application) and facilitates arbitrary Unix shell command execution (T1059.004).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-7204Shared CWE-77, CWE-78
CVE-2026-2152Shared CWE-77, CWE-78
CVE-2026-5677Shared CWE-77, CWE-78
CVE-2026-2157Shared CWE-77, CWE-78
CVE-2026-7136Shared CWE-77, CWE-78
CVE-2026-7121Shared CWE-77, CWE-78
CVE-2026-9387Shared CWE-77, CWE-78
CVE-2026-9477Shared CWE-77, CWE-78
CVE-2026-2063Shared CWE-77, CWE-78
CVE-2026-2847Shared CWE-77, CWE-78

Affected Assets

Totolink
A7100RU
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match
prevent

Directly requires validation and sanitization of the 'enable' argument in setSyslogCfg to block OS command injection via the CGI endpoint.

AC-3 Access Enforcement partial match
prevent

Enforces access-control decisions on /cgi-bin/cstecgi.cgi so that unauthenticated remote requests cannot reach the vulnerable function.

SC-7 Boundary Protection partial match
prevent

Boundary-protection mechanisms can restrict or filter remote traffic to the router's management CGI, reducing exposure to the publicly exploitable injection.

References