CVE-2026-0126 Overview
CVE-2026-0126 is an out-of-bounds write vulnerability in the WC-Radio component, disclosed through the Android Security Bulletin for June 2026. The flaw stems from a missing bounds check, allowing memory corruption beyond an allocated buffer. Exploitation can lead to remote code execution without requiring additional privileges or user interaction. The vulnerability impacts devices that ship the affected WC-Radio component, with patches delivered through the Pixel Android security update cycle.
Critical Impact
Attackers can achieve remote code execution with no user interaction and no additional execution privileges required.
Affected Products
- WC-Radio component as referenced in the Android Security Bulletin June 2026
- Pixel devices receiving the June 2026 security patch level
- Android builds shipping the vulnerable WC-Radio firmware
Discovery Timeline
- 2026-06-16 - CVE-2026-0126 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2026-0126
Vulnerability Analysis
The vulnerability is an out-of-bounds write in the WC-Radio component. WC-Radio handles radio-layer communications on affected Android devices. The component writes data into a buffer without first validating the size or index against the buffer's allocated boundary. As a result, attacker-controlled input can write past the end of the buffer and corrupt adjacent memory.
Memory corruption in a radio-layer component is particularly impactful because the code typically runs with elevated privileges and processes data originating from external sources. An attacker who controls the input that reaches the unchecked write can overwrite function pointers, return addresses, or other control structures. Successful overwrite paths can be chained to redirect execution into attacker-controlled code.
The EPSS score is 0.151% with a percentile of 4.654, indicating low predicted near-term exploitation activity. The vulnerability has not been listed in the CISA Known Exploited Vulnerabilities catalog.
Root Cause
The root cause is a missing bounds check before a memory write operation in the WC-Radio component. The code path does not verify that the destination index or length stays within the allocated buffer size, enabling writes beyond the intended region.
Attack Vector
Exploitation requires no user interaction and no additional execution privileges. An attacker delivers crafted input to the WC-Radio component along its normal processing path. Refer to the Android Security Bulletin June 2026 for component-level technical detail.
No verified public proof-of-concept code is available for this vulnerability. The vulnerability mechanism is documented in vendor advisories rather than third-party exploit repositories.
Detection Methods for CVE-2026-0126
Indicators of Compromise
- Unexpected crashes, restarts, or watchdog resets in the radio or modem subsystem on affected devices
- Anomalous radio process memory faults logged in logcat or vendor diagnostic logs
- Unsigned or unexpected native modules loaded by radio-layer processes
Detection Strategies
- Verify the Android security patch level on managed devices and flag any device below the June 2026 patch level
- Correlate device crash telemetry with radio-component fault signatures using mobile threat defense tooling
- Use MDM and EMM compliance policies to identify devices missing the vendor security update
Monitoring Recommendations
- Monitor enterprise mobility management dashboards for patch-level compliance against the June 2026 Pixel bulletin
- Track radio subsystem stability metrics for sustained increases in unexpected resets
- Subscribe to the Android Security Bulletin feed for follow-up advisories
How to Mitigate CVE-2026-0126
Immediate Actions Required
- Apply the June 2026 Android security patch level or later to all affected devices
- Inventory devices running the WC-Radio component and prioritize patching for those exposed to untrusted networks
- Enforce minimum security patch level requirements through MDM compliance policies
Patch Information
Fixes are delivered through the Android security update process documented in the Android Security Bulletin June 2026. Devices with the 2026-06-01 security patch level or later receive the bounds-check fix for the WC-Radio component.
Workarounds
- No vendor-supplied workaround is published; patching is the supported remediation
- Where patching is delayed, restrict device exposure to untrusted radio environments and limit attack surface through network controls
- Decommission or isolate devices that cannot receive the June 2026 update
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
