CVE-2026-24091: Improper Validation of Syntactic Correctness of Input in Display

Synopsis

Memory corruption vulnerability in Qualcomm Snapdragon's Display fastboot command processing allows an attacker with physical access and privileged credentials to trigger undefined memory behavior. The vulnerability requires physical proximity to the device as well as a high-privilege account, limiting its practical reach to adversaries with direct hardware access. Successful exploitation gives the attacker full read, write, and availability control over the affected component. HarborGuard tracks this advisory and will make a patched-image rebuild available the moment an upstream fix is published.

HarborGuard Coverage

Exploit Conditions

• Network reachabilityNot required

  The attacker requires physical proximity to the device; no network path is needed to trigger the vulnerability.

• AuthenticationRequired

  A high-privilege (admin-level) account is required; low-privilege credentials are not sufficient to reach the affected fastboot command surface.

• Victim interactionNot required

  No action from another user or victim is needed; the attacker interacts with the target device directly.

• Attack complexityDetail

  Exploitation is reliable and condition-free once physical access and privileged credentials are obtained; no race conditions or memory-layout dependencies are involved.

Blast Radius

• A successful attacker reads arbitrary memory contents from the affected Snapdragon component, including any sensitive data resident at exploitation time.
• The attacker writes to memory regions within the affected component, enabling persistent modification of firmware state or stored configuration.
• The attacker can crash or destabilize the affected component, rendering the device or the Display subsystem unresponsive.