CVE-2025-59613 Overview
CVE-2025-59613 is a memory corruption vulnerability affecting a broad range of Qualcomm firmware components, including Snapdragon mobile platforms, FastConnect connectivity solutions, and audio codec chipsets. The flaw occurs when an output buffer is smaller than the input buffer during a data copying operation, leading to a stack-based buffer overflow classified under [CWE-121]. Exploitation requires local access with high privileges, but successful attacks compromise confidentiality, integrity, and availability of the affected device. Qualcomm published details in the Qualcomm June 2026 Security Bulletin.
Critical Impact
A high-privileged local attacker can corrupt stack memory in Qualcomm firmware, potentially achieving arbitrary code execution within firmware execution contexts on Snapdragon-based devices.
Affected Products
- Qualcomm Snapdragon mobile platforms (460, 662, AR1 Gen 1, XR2 5G, XR2+ Gen 1)
- Qualcomm FastConnect 6700, 6900, and 7800 connectivity chipsets
- Qualcomm WCD, WSA, and WCN audio and connectivity firmware families
Discovery Timeline
- 2026-06-01 - CVE-2025-59613 published to the National Vulnerability Database
- 2026-06-02 - Last updated in NVD database
Technical Details for CVE-2025-59613
Vulnerability Analysis
The vulnerability stems from missing bounds validation between input and output buffers during a data copy operation in Qualcomm firmware. When the destination buffer is smaller than the source buffer, the copy operation writes past the allocated stack region. This produces a stack-based buffer overflow consistent with [CWE-121]. The overflow can overwrite adjacent stack variables, saved registers, and return addresses within the firmware execution context. Because the issue resides in widely deployed firmware such as the FastConnect Wi-Fi/Bluetooth subsystem and audio codec controllers, the attack surface spans mobile, compute, XR, and IoT product lines.
Root Cause
The root cause is improper validation of buffer size relationships before invoking the copy routine. The firmware trusts caller-supplied or context-derived length values without enforcing that the destination capacity is greater than or equal to the source length. This omission turns a routine memcpy-style operation into a memory corruption primitive.
Attack Vector
Exploitation requires local access with high privileges and no user interaction. An attacker with privileged access to the host operating system can invoke the vulnerable firmware interface with a crafted buffer length pair. The resulting stack overflow can be leveraged to corrupt firmware control flow, potentially enabling code execution in the firmware processor or persistent state corruption affecting wireless, audio, or compute subsystems.
No public proof-of-concept exploit is currently available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Detection Methods for CVE-2025-59613
Indicators of Compromise
- Unexpected crashes, resets, or watchdog timeouts in Qualcomm subsystems such as WLAN, audio codec, or modem firmware
- Kernel log entries showing remoteproc or subsystem restart events tied to FastConnect, WCD, or WSA components
- Anomalous privileged calls to firmware control interfaces from non-system processes
Detection Strategies
- Monitor device telemetry for repeated firmware subsystem restarts that may indicate exploitation attempts triggering memory corruption
- Audit local processes that interact with Qualcomm HAL services and proprietary IOCTLs for unusual privileged activity
- Compare installed firmware build identifiers against the patched versions referenced in the Qualcomm June 2026 bulletin
Monitoring Recommendations
- Centralize mobile and IoT endpoint logs to identify clusters of subsystem crashes across managed devices
- Track privilege boundary crossings to firmware interfaces and alert on calls originating from processes outside the expected vendor service set
- Establish a baseline of normal Qualcomm subsystem restart frequency and alert on deviations
How to Mitigate CVE-2025-59613
Immediate Actions Required
- Inventory all devices using affected Qualcomm chipsets, including Snapdragon mobile, compute, XR, and FastConnect-based platforms
- Apply OEM firmware updates that incorporate Qualcomm's June 2026 security patches as soon as they are made available by device manufacturers
- Restrict local high-privilege access on affected devices by enforcing least privilege and removing unnecessary administrative accounts
Patch Information
Qualcomm has addressed CVE-2025-59613 in the patches referenced in the Qualcomm June 2026 Security Bulletin. Because Qualcomm firmware ships through OEM device vendors, customers must apply the updated firmware images distributed by their device manufacturer or carrier. Verify that the deployed build incorporates the June 2026 fix before considering remediation complete.
Workarounds
- Limit access to privileged firmware interfaces by hardening the OS layer and disabling unused HAL services on affected devices
- Where feasible, disable optional Qualcomm subsystems such as auxiliary audio or XR features on devices that do not require them until patched firmware is applied
- Enforce mobile device management policies that block installation of untrusted privileged applications capable of invoking firmware control paths
# Configuration example: verify Qualcomm firmware build on an Android device via ADB
adb shell getprop ro.build.fingerprint
adb shell getprop ro.vendor.build.security_patch
adb shell dumpsys package | grep -i qualcomm
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
