Attack Chain

1. Attacker gains local access to a device with a vulnerable Qualcomm chipset.
2. Attacker analyzes the partition table structure and identifies the cryptographic flaw.
3. Attacker crafts a malicious partition table entry, exploiting the missing authentication (CWE-306).
4. Attacker modifies the partition table using specialized tools or scripts, injecting the malicious entry.
5. The device is rebooted, and the bootloader processes the modified partition table.
6. Due to the cryptographic vulnerability, the malicious partition table entry is processed without proper validation.
7. The boot flow is altered, potentially redirecting execution to attacker-controlled code.
8. Attacker gains control of the device’s boot process, leading to arbitrary code execution and potential system compromise.

Impact

Successful exploitation of CVE-2026-24090 allows an attacker to modify the device’s boot flow, potentially leading to complete device compromise. Given the widespread use of Qualcomm chipsets in mobile devices, embedded systems, and IoT devices, a large number of devices could be vulnerable. The unauthorized modification of the boot flow can lead to data theft, installation of malware, or even bricking the device. The CVSS v3.1 base score of 7.1 indicates a high level of severity, especially concerning confidentiality and integrity.

Recommendation

• Monitor for unauthorized modifications to partition tables using file integrity monitoring tools (file_event log source).
• Implement the mitigations and patches provided in the Qualcomm security bulletin for June 2026 to address CVE-2026-24090.
• Deploy the Sigma rule “Detect Suspicious Partition Table Modification” to detect potential exploitation attempts (file_event log source).
• Prioritize patching of devices with Qualcomm chipsets, especially those that are physically accessible or handle sensitive data, based on the Qualcomm June 2026 bulletin reference.