Sensor — CraftedSignal Threat Feedhttps://feed.craftedsignal.io/tags/sensor/Trending threats, MITRE ATT&CK coverage, and detection metadata — refreshed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioMon, 06 Apr 2026 16:16:30 +0000Qualcomm Memory Corruption Vulnerability in Auxiliary Sensor Processing (CVE-2026-21374)https://feed.craftedsignal.io/briefs/2026-04-qualcomm-cve-2026-21374/Mon, 06 Apr 2026 16:16:30 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-04-qualcomm-cve-2026-21374/CVE-2026-21374 describes a memory corruption vulnerability due to insufficient buffer size validation when processing auxiliary sensor input/output control commands, potentially allowing a local attacker to execute arbitrary code with elevated privileges.CVE-2026-21374 is a memory corruption vulnerability affecting Qualcomm chipsets. The vulnerability stems from insufficient buffer size validation when processing auxiliary sensor input/output control commands. This flaw could allow a local attacker with elevated privileges to potentially execute arbitrary code or cause a denial-of-service condition by exploiting the buffer over-read. The vulnerability was published on April 6, 2026, and assigned a CVSS v3.1 base score of 7.8. The affected components relate to handling sensor data, making devices relying heavily on sensor input (e.g., smartphones, IoT devices) particularly susceptible. Successful exploitation requires local access to the device, which limits the scope of potential attacks.

Attack Chain

  1. Attacker gains local access to a device with a vulnerable Qualcomm chipset, potentially through physical access or prior exploitation of another vulnerability.
  2. The attacker crafts a malicious auxiliary sensor input/output control command.
  3. The attacker sends the crafted command to the sensor processing module.
  4. The sensor processing module attempts to process the command without proper buffer size validation.
  5. Due to the insufficient validation, the module reads beyond the intended buffer, leading to a buffer over-read.
  6. The memory corruption occurs, potentially overwriting critical data or code within the system’s memory.
  7. If the overwritten memory contains executable code, the attacker can achieve arbitrary code execution with the privileges of the sensor processing module, which could be elevated.
  8. The attacker gains control of the device or causes a denial-of-service by crashing the system.

Impact

Successful exploitation of CVE-2026-21374 can lead to arbitrary code execution with elevated privileges on affected devices. This could allow an attacker to install malware, steal sensitive data, or completely take control of the device. While the vulnerability requires local access, it poses a significant risk to devices that are frequently left unattended or are accessible to untrusted individuals. The number of potentially affected devices is substantial, given the widespread use of Qualcomm chipsets in mobile and IoT devices.

Recommendation

  • Monitor for suspicious process creation events related to sensor processing modules or applications that interact with sensor data to identify potential exploitation attempts (see generic process_creation rule below, tune for specific Qualcomm binaries).
  • Investigate any unexpected crashes or errors reported by sensor-related processes, as these could indicate memory corruption due to CVE-2026-21374.
  • Apply security patches released by Qualcomm or device manufacturers as soon as they become available to address CVE-2026-21374 (reference: https://docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin.html).
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