How broadly exploitable is this vulnerability?

Exploitation is limited to environments where an attacker has a standard OS user account on the host and can modify TCL macro scripts that are later executed by a higher-privileged process. In such setups, the impact can be severe, enabling escalation to system-level privileges.

Does an attacker need remote access or just local credentials?

The attacker typically needs local or remote authenticated access as a standard OS user on the server (for example via SSH, RDP, or an application that grants shell access). Without the ability to write to macro locations or influence script content, exploitation is not feasible.

What is the safest general fix pattern?

The safest pattern is to treat TCL macros as trusted executable code: move them to locked-down directories, restrict write access strictly to administrators or service accounts, and validate script integrity before execution. Combined with running the application server under a minimally privileged account, this removes the privilege escalation path.

Severity:

HIGH RISK

(8.8)

Code Injection via TCL Macro Script Tampering (CWE-94) in Model Application Server

CVE-2025-64691

Published:

Jan 15, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Code Injection

CWE:

CWE-94

Impact:

Local Privilege Escalation to System and Full Server Compromise

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Code Injection

CWE:

CWE-94

Impact:

Local Privilege Escalation to System and Full Server Compromise

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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Made with Love in San Francisco

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Ask AI for summary of CodeAnt

Code Injection via TCL Macro Script Tampering (CWE-94) in Model Application Server

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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