CVE-2025-21480 Overview
CVE-2025-21480 is a memory corruption vulnerability in the Qualcomm Graphics Processing Unit (GPU) micronode firmware. The flaw allows unauthorized command execution when the GPU processes a specific sequence of commands. The weakness maps to [CWE-863: Incorrect Authorization], indicating the GPU micronode fails to properly validate command authorization before execution. The vulnerability affects a broad portfolio of Qualcomm Snapdragon mobile platforms, FastConnect modules, and audio and connectivity firmware shipped across Android handsets, laptops, and XR devices. CISA added CVE-2025-21480 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation. Qualcomm published patches in the Qualcomm Security Bulletin June 2025.
Critical Impact
Local attackers can corrupt GPU memory to achieve unauthorized command execution, leading to compromise of confidentiality, integrity, and availability. The vulnerability is confirmed exploited in the wild and listed in CISA KEV.
Affected Products
- Qualcomm Snapdragon 8 Gen 2 and Snapdragon 8 Gen 3 Mobile Platforms
- Qualcomm Snapdragon 855, 865, 888, and 4 Gen 1 Mobile Platforms
- Qualcomm FastConnect 6200/6700/6800/6900/7800 and WCN/WCD/WSA series firmware
Discovery Timeline
- 2025-06-03 - CVE-2025-21480 published to NVD
- June 2025 - Qualcomm releases security patch via the June 2025 Security Bulletin
- 2025-10-28 - Last updated in NVD database
Technical Details for CVE-2025-21480
Vulnerability Analysis
The vulnerability resides in the Qualcomm Adreno GPU micronode, a privileged microcontroller-style component that processes command buffers submitted from user space through the GPU driver. When a specific sequence of GPU commands reaches the micronode, the firmware executes commands that it should have rejected. The result is memory corruption inside a more privileged execution context than the original caller. Because the flaw is classified under [CWE-863: Incorrect Authorization], the root issue is a missing or incomplete authorization check, not a parser bug.
The scope changes from the calling process to the GPU firmware context, which is why a local user-level trigger can impact components beyond the original security boundary. User interaction is required, which aligns with field reports of exploit chains delivered through targeted applications or content rendered by the GPU.
Root Cause
The GPU micronode firmware does not enforce authorization on a particular command path. When a crafted sequence of GPU commands is queued, the micronode honors privileged operations that should be restricted to trusted command streams. This produces out-of-policy writes inside GPU-managed memory and the micronode's own state.
Attack Vector
The attack vector is local. A low-privileged application on an affected device submits a crafted command buffer to the GPU. The malicious sequence triggers the authorization gap inside the micronode, corrupting memory and executing GPU commands without proper checks. Field exploitation has been observed in limited, targeted attacks against Android devices, consistent with the CISA KEV listing. No public proof-of-concept is currently available.
The vulnerability mechanism is described in the Qualcomm Security Bulletin June 2025. No verified exploit code is available for inclusion.
Detection Methods for CVE-2025-21480
Indicators of Compromise
- Unexpected GPU driver crashes, kernel panics, or graphics subsystem resets on affected Snapdragon devices
- Android applications submitting unusually long or malformed GPU command buffers through the kgsl driver
- Devices receiving sideloaded applications shortly before instability appears in the graphics stack
Detection Strategies
- Monitor Android Verified Boot and SafetyNet/Play Integrity attestation failures across the mobile fleet
- Inspect device logs for repeated adreno, kgsl, or GPU micronode fault entries that correlate with specific apps
- Track installation of unsigned or out-of-store applications on devices running unpatched June 2025 firmware
Monitoring Recommendations
- Enforce mobile device management (MDM) policies that report device patch level and flag devices missing the June 2025 Qualcomm security update
- Forward mobile threat defense telemetry to a central analytics platform to correlate GPU faults with application installs
- Alert on devices that disable Play Protect or sideload APKs, which are common preconditions for exploit delivery
How to Mitigate CVE-2025-21480
Immediate Actions Required
- Apply the OEM Android security update that incorporates the Qualcomm June 2025 patch level on all affected devices
- Prioritize patching for high-risk users such as executives, journalists, and developers, given confirmed targeted exploitation
- Inventory all Qualcomm-based devices, including laptops using SC8380XP and XR devices using SXR2230P/2250P/2330P, and verify firmware status
Patch Information
Qualcomm released fixes in the Qualcomm Security Bulletin June 2025. OEMs distribute the fixed firmware through their monthly Android security patches; the corresponding Android Security Patch Level is June 2025 or later. Devices that have reached end-of-support from their OEM will not receive the fix and should be retired or isolated. CISA requires federal agencies to remediate per the KEV catalog deadline listed in the CISA Known Exploited Vulnerabilities Catalog.
Workarounds
- Restrict application installation to vetted, signed sources and disable sideloading where business policy permits
- Enable Google Play Protect and require Play Integrity attestation for access to sensitive corporate resources
- Isolate or decommission Qualcomm-based devices that cannot receive the June 2025 patch from production networks
# Verify Android security patch level on a managed device via adb
adb shell getprop ro.build.version.security_patch
# Expected output: 2025-06-01 or later for remediated devices
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
