CVE-2026-20553

Overview

CVE-2026-20553 is an out‑of‑bounds write flaw in DA firmware that can be exploited locally without user interaction. The vulnerability allows an attacker with physical access to elevate privileges on the device. It is rated medium severity with a CVSS v3 score of 6.8.

Description

In DA, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11468968; Issue ID: MSV-10166.

Impact

The flaw can compromise the integrity of the device’s operating system, potentially allowing an attacker to modify system files or configurations. Confidentiality may also be at risk if privileged data is accessed. Availability is not directly impacted. Defenders should focus on devices running the affected firmware and ensure physical security controls are in place.

Remediation

1. Apply the official firmware update identified by Patch ID ALPS11468968. 2. Verify the integrity of the firmware after installation. 3. Restrict physical access to the device by implementing lock‑down procedures or tamper‑evident seals. 4. Monitor for any anomalous privilege‑elevation activity in system logs.

Risk context

The vulnerability is classified as medium severity with a CVSS v3 score of 6.8. No EPSS data is available, but the lack of user interaction and requirement for physical access mean that the risk is primarily to environments where physical security is weak.

Affected products

• DA firmware