CVE-2025-47346 Overview
CVE-2025-47346 is an out-of-bounds write (CWE-787) vulnerability affecting Qualcomm trusted application secure logging functionality. The flaw occurs during the processing of secure logging commands within the trusted execution environment (TEE), leading to memory corruption that can potentially allow an attacker with local access to compromise device integrity.
Critical Impact
Local attackers with low privileges can exploit this memory corruption vulnerability to achieve high impact on confidentiality, integrity, and availability of affected systems.
Affected Products
- Qualcomm chipsets with affected trusted application firmware
- Devices utilizing Qualcomm secure logging trusted application components
- Mobile and embedded systems running vulnerable Qualcomm TEE implementations
Discovery Timeline
- 2026-01-07 - CVE CVE-2025-47346 published to NVD
- 2026-01-08 - Last updated in NVD database
Technical Details for CVE-2025-47346
Vulnerability Analysis
This vulnerability stems from improper memory handling within Qualcomm's trusted application when processing secure logging commands. The trusted execution environment (TEE) is designed to provide isolated, secure processing for sensitive operations. However, when malformed or specially crafted secure logging commands are submitted to the trusted application, the memory corruption occurs due to an out-of-bounds write condition.
The local attack vector means an adversary would need some level of access to the target device. Once access is obtained, exploitation requires only low privileges, and no user interaction is necessary. The vulnerability affects the confidentiality, integrity, and availability of the system—a successful exploit could allow an attacker to read sensitive data from protected memory regions, modify critical system data, or cause system instability.
Root Cause
The root cause is classified as CWE-787 (Out-of-bounds Write). This occurs when the trusted application fails to properly validate the bounds of data being written to memory during secure logging command processing. The application writes data past the intended buffer boundaries, corrupting adjacent memory regions within the trusted execution environment.
Attack Vector
The attack requires local access to the target device. An attacker would craft malicious secure logging commands designed to trigger the out-of-bounds write condition. Since the vulnerability exists within the trusted application layer, successful exploitation could compromise the security guarantees provided by the TEE, potentially affecting other secure operations that rely on this isolation.
The exploitation mechanism involves sending specially formatted logging commands that cause the trusted application to write beyond allocated buffer boundaries. This can overwrite critical data structures or function pointers within the TEE's memory space.
Detection Methods for CVE-2025-47346
Indicators of Compromise
- Unexpected crashes or instability in trusted application services
- Anomalous secure logging command patterns or malformed logging requests
- Memory corruption signatures in TEE diagnostic logs
- Unusual process behavior related to trusted execution environment interactions
Detection Strategies
- Monitor system logs for trusted application crashes or unexpected restarts
- Implement integrity monitoring for TEE-related system components
- Deploy endpoint detection solutions capable of identifying memory corruption exploitation attempts
- Analyze secure logging command traffic for anomalous patterns
Monitoring Recommendations
- Enable verbose logging for trusted application interactions where available
- Monitor for unusual local process activity attempting to interact with TEE services
- Implement behavioral analysis to detect exploitation attempts targeting the secure logging functionality
- Review system stability metrics for patterns indicating memory corruption
How to Mitigate CVE-2025-47346
Immediate Actions Required
- Review the Qualcomm January 2026 Security Bulletin for affected product details
- Apply available firmware updates from device manufacturers that incorporate Qualcomm's security patches
- Restrict local access to systems where possible to reduce attack surface
- Monitor for vendor-specific security advisories related to this CVE
Patch Information
Qualcomm has addressed this vulnerability in their January 2026 Security Bulletin. Device manufacturers and OEMs should obtain the relevant patches from Qualcomm and integrate them into their firmware update processes. End users should apply device firmware updates as they become available from their device manufacturers.
For detailed patch information and affected chipset listings, refer to the Qualcomm January 2026 Security Bulletin.
Workarounds
- Limit local access to affected devices to trusted users only
- Implement additional access controls and monitoring for systems with exposed TEE interfaces
- Consider network segmentation to isolate potentially affected devices
- Disable or restrict access to secure logging functionality if not required for operations (consult vendor documentation for feasibility)
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
