Overview

A critical vulnerability labeled as CVE-2025-26783 has been identified in several Samsung processors. These include the Mobile Processor, Wearable Processor, and Modem Exynos with various model numbers. The vulnerability, due to incorrect handling of undefined values, can potentially lead to a Denial of Service (DoS), compromising system integrity and leading to potential data leakage.

Vulnerability Summary

CVE ID: CVE-2025-26783
Severity: High (7.5 CVSS score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Successful exploitation of this vulnerability could lead to a Denial of Service (DoS), system compromise, and potential data leakage.

Affected Products

Product | Affected Versions

Samsung Mobile Processor Exynos | 2100, 1280, 2200, 1330, 1380, 1480, 2400
Samsung Wearable Processor | W1000
Samsung Modem | 5300, 5400

How the Exploit Works

The vulnerability arises from the incorrect handling of undefined values in the Real-time Radio Controller (RRC) of the affected processors. This mishandling can trigger a Denial of Service (DoS) condition, disrupting the normal functioning of the device. Depending upon the context and the attacker’s objectives, this could potentially lead to a full system compromise or even data leakage.

Conceptual Example Code

While a specific exploit code is not available, an attacker could potentially craft a malicious payload that takes advantage of the mishandling of undefined values. A conceptual example could look similar to this pseudocode:

POST /rrc/handler HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "undefined_value": "trigger_DoS" }

This conceptual example showcases a payload designed to exploit the vulnerability by sending an undefined value to the RRC handler, triggering a Denial of Service condition.
Please note this is a conceptual example and the actual exploit might be different based on the specific APIs and system architecture of the affected products.