CVE-2026-30290

HighPublic PoC

Published: 31 March 2026

Published

31 March 2026

Modified

07 April 2026

KEV Added

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Patch

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CVSS Score v3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0023 13.7th percentile

Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-30290 is a high-severity Path Traversal (CWE-22) vulnerability in Intouchapp Intouch Contacts \& Caller Id. Its CVSS base score is 8.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 13.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

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

Deeper analysis

CVE-2026-30290 is an arbitrary file overwrite vulnerability (CWE-22) in the InTouch Contacts & Caller ID APP version 6.38.1. Published on 2026-03-31T20:16:26.670, it carries a CVSS v3.1 base score of 8.4 (AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). The issue enables attackers to overwrite critical internal files through the app's file import process, which can result in arbitrary code execution or information exposure.

A local attacker requires no privileges and can exploit the vulnerability with low attack complexity and no user interaction. By supplying a malicious file during the import process, the attacker can target and overwrite sensitive internal files, achieving high-impact effects on confidentiality, integrity, and availability, such as executing arbitrary code within the app's context or exposing user data.

Advisories and further details are available in the referenced sources: https://github.com/Secsys-FDU/AF_CVEs/issues/19, https://secsys.fudan.edu.cn/, and https://www.intouchapp.com/.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-17596

Vulnerability details

An arbitrary file overwrite vulnerability in InTouch Contacts & Caller ID APP v6.38.1 allows attackers to overwrite critical internal files via the file import process, leading to arbitrary code execution or information exposure.

CWE(s): CWE-22

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1203 Exploitation for Client Execution Execution

Adversaries may exploit software vulnerabilities in client applications to execute code.

attack.mitre.org →

T1554 Compromise Host Software Binary Persistence

Adversaries may modify host software binaries to establish persistent access to systems.

attack.mitre.org →

Why these techniques?

Arbitrary file overwrite via path traversal in a client app directly enables local exploitation for code execution (T1203) and facilitates compromising/replacing app binaries or internal files to run attacker-controlled code (T1554).

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