CVE-2025-59605 Overview
CVE-2025-59605 is a memory corruption vulnerability affecting a broad range of Qualcomm Snapdragon and related firmware components. The flaw occurs when the firmware processes device identifier strings that exceed the expected maximum length, resulting in an out-of-bounds write [CWE-787]. A local attacker with low privileges can trigger the condition to corrupt memory on the affected device. Qualcomm addressed the issue in its June 2026 Security Bulletin across mobile, automotive, compute, IoT, and connectivity product lines.
Critical Impact
Successful exploitation can compromise confidentiality, integrity, and availability of the affected firmware, enabling local code execution or device compromise across hundreds of Qualcomm chipsets.
Affected Products
- Qualcomm Snapdragon mobile platforms (including Snapdragon 8 Gen 1/2, 8+ Gen 1/2, 888, 865, 778G, 695, 4 Gen 1/2, and others)
- Qualcomm FastConnect, QCA, WCN, and WCD connectivity and audio firmware (FastConnect 6200–7800, QCA6xxx series, WCN3xxx/6xxx, WCD93xx series)
- Qualcomm automotive, compute, XR, wearable, and Dragonwing platforms (SA8155P/SA8295P, Snapdragon 7c+ Gen 3, Snapdragon XR2, Snapdragon W5+ Gen 1, Dragonwing QRU100/X100)
Discovery Timeline
- 2026-06-01 - CVE-2025-59605 published to NVD
- 2026-06-02 - Last updated in NVD database
- June 2026 - Qualcomm publishes security bulletin and patch guidance
Technical Details for CVE-2025-59605
Vulnerability Analysis
The vulnerability is an out-of-bounds write classified under [CWE-787]. Qualcomm firmware accepts device identifier strings during normal operation. When an input string exceeds the expected maximum length, the firmware writes beyond the bounds of the destination buffer. This corrupts adjacent memory structures within the affected firmware component.
The attack vector is local, and exploitation requires low privileges without user interaction. The impact spans confidentiality, integrity, and availability, which is consistent with memory corruption flaws that allow attacker-controlled data to overwrite firmware state. On embedded SoC components such as connectivity and audio firmware, an attacker who reaches the affected code path can degrade device stability or escalate control over privileged firmware contexts.
Root Cause
The root cause is missing length validation on device identifier strings before they are copied into a fixed-size buffer. The firmware assumes the identifier respects an expected maximum length and does not enforce this constraint at the boundary. When an oversized identifier is supplied, the write operation extends past the buffer, corrupting adjacent memory.
Attack Vector
A local attacker with low-privilege access to the affected device interacts with a component that forwards device identifier strings to vulnerable firmware. By supplying an identifier longer than the expected maximum, the attacker triggers the out-of-bounds write. The corruption can be shaped to influence firmware control flow or data structures, depending on the chipset and component involved. No user interaction is required.
No public proof-of-concept exploit code has been published for CVE-2025-59605, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. See the Qualcomm June 2026 Security Bulletin for vendor-specific technical context.
Detection Methods for CVE-2025-59605
Indicators of Compromise
- Unexpected firmware crashes, resets, or kernel panics referencing connectivity, audio, or modem subsystems on Qualcomm-based devices
- Anomalous device identifier strings observed in driver, HAL, or vendor logs that exceed expected lengths
- Repeated invocations of vendor IOCTLs or service interfaces that pass identifier parameters from low-privileged processes
Detection Strategies
- Monitor host and mobile device telemetry for repeated firmware faults or watchdog resets tied to Qualcomm subsystems
- Inspect application and system logs for malformed or oversized device identifier values forwarded to vendor drivers
- Correlate local privilege escalation attempts with subsequent firmware instability on devices running affected Snapdragon platforms
Monitoring Recommendations
- Track patch status of Qualcomm firmware components against the June 2026 bulletin across managed mobile, automotive, and IoT fleets
- Alert on unsigned or unapproved applications that interact with vendor HAL interfaces handling device identifiers
- Centralize crash dumps and firmware error reports from endpoints to identify clusters of failures across affected chipsets
How to Mitigate CVE-2025-59605
Immediate Actions Required
- Apply Qualcomm firmware updates referenced in the June 2026 Security Bulletin as they are integrated by OEMs into device-level patches
- Inventory devices using affected Snapdragon, FastConnect, QCA, WCN, WCD, and Dragonwing components to prioritize remediation
- Restrict installation of untrusted applications on affected mobile and embedded devices to limit local attacker access
Patch Information
Qualcomm released fixes as part of its June 2026 Security Bulletin. Device manufacturers must incorporate the updated firmware into their respective OEM security updates. Refer to the Qualcomm June 2026 Security Bulletin for the complete list of affected components and corresponding patched versions.
Workarounds
- Enforce least-privilege application policies to limit which local processes can reach vendor interfaces that handle device identifiers
- Disable or restrict access to non-essential connectivity and audio services on devices where vendor patches are not yet available
- Enroll managed devices in mobile device management (MDM) policies that block sideloading and enforce timely OEM security updates
# Example: verify Android security patch level on managed devices
adb shell getprop ro.build.version.security_patch
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
