How widely exploitable is this vulnerability?

Exploitability depends on how easily an attacker can cause the app to import a crafted file—such as by sending a file via messaging, email, or cloud share and convincing the user or another app to open it with InTouch. Where such interactions are common, the practical attack surface is significant.

Does exploiting this require physical access to the device?

Physical access is not strictly required. An attacker typically needs only a remote channel to deliver a malicious file to the device and a way to have it opened by the vulnerable app, which may occur through normal user interactions.

What is the safest general fix pattern for developers?

Constrain all imported files to be written inside a dedicated, non-executable directory using framework-provided safe storage APIs, generate internal filenames independent of user-controlled values, and reject any path that resolves outside the intended directory after canonicalization.

Severity:

HIGH RISK

(8.4)

Arbitrary File Overwrite (CWE-22) in InTouch Contacts & Caller ID File Import

CVE-2026-30290

Published:

Mar 31, 2026

Status:

Undergoing Analysis

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:

Arbitrary File Overwrite

CWE:

CWE-22

Impact:

Arbitrary Code Execution and Information Exposure

Severity:

HIGH RISK

(8.4)

CVSS Version:

3.1

Vulnerability Type

Category:

Arbitrary File Overwrite

CWE:

CWE-22

Impact:

Arbitrary Code Execution and Information Exposure

Severity:

HIGH RISK

(8.4)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Arbitrary File Overwrite (CWE-22) in InTouch Contacts & Caller ID File Import

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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