CVE-2026-50603: Acer NitroSense Information Disclosure

CVE-2026-50603 is an information disclosure vulnerability in Acer NitroSense and PredatorSense caused by hard-coded AES encryption keys. Local attackers can exploit this flaw to access protected data. This article covers technical details, affected versions, impact assessment, and mitigation strategies.

CVE-2026-50603 Overview

A vulnerability exists in the Acer Agent Service component bundled with NitroSense and PredatorSense. The flaw stems from a hard-coded AES encryption key embedded within the software [CWE-321]. A local attacker who extracts the embedded key can decrypt protected data or perform unauthorized actions the service otherwise restricts. The issue requires local access to the affected host and does not require authentication or user interaction.

Critical Impact
A local attacker can leverage the embedded AES key to access protected information or perform unauthorized actions handled by the Acer Agent Service.

Affected Products

Acer Agent Service (component)
Acer NitroSense
Acer PredatorSense

Discovery Timeline

2026-09-17 - CVE-2026-50603 published to the National Vulnerability Database (NVD)
2026-09-17 - Last updated in the NVD database

Technical Details for CVE-2026-50603

Vulnerability Analysis

The Acer Agent Service ships with an AES symmetric key compiled directly into the binary. Because every installation carries the same key, extracting it once compromises the confidentiality guarantees on every affected system. The vulnerability is categorized as Use of Hard-coded Cryptographic Key [CWE-321]. Exploitation is local, meaning an attacker must already have a foothold on the machine to reach the service's protected data or command surface.

Root Cause

The root cause is the embedding of a static AES key inside the Acer Agent Service binary shipped with NitroSense and PredatorSense. Hard-coded keys defeat the purpose of encryption because the key material can be recovered through static analysis, reverse engineering, or memory inspection. Once recovered, the key is identical across all deployments of the affected software.

Attack Vector

Exploitation requires local access. An attacker extracts the AES key from the Acer Agent Service executable or its loaded memory. With the key in hand, the attacker can decrypt data the service protects or forge encrypted payloads that the service will accept as authentic. This can lead to disclosure of protected information or unauthorized service actions on the local host. Refer to the Acer Community Article for vendor guidance.

No public proof-of-concept exploit is available at the time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2026-50603

Indicators of Compromise

Unexpected processes reading the Acer Agent Service executable or its memory space using tools such as procdump, Mimikatz-style memory readers, or debuggers.
Local access to the Acer Agent Service's protected configuration or data files by non-administrative user contexts.
Anomalous inter-process communication with the Acer Agent Service that carries valid-looking encrypted payloads from unusual callers.

Detection Strategies

Inventory endpoints running NitroSense or PredatorSense and correlate installed versions with the vendor advisory to identify vulnerable hosts.
Monitor for reverse engineering tooling (x64dbg, IDA, Ghidra, dnSpy) executing on user endpoints where such tools are not sanctioned.
Alert on file access to Acer Agent Service binaries and configuration paths by processes outside the normal Acer software update chain.

Monitoring Recommendations

Enable process creation and image load logging on endpoints running NitroSense or PredatorSense.
Baseline the Acer Agent Service's expected child processes and flag deviations for review.
Forward endpoint telemetry to a centralized analytics platform to hunt for lateral use of extracted key material across the fleet.

How to Mitigate CVE-2026-50603

Immediate Actions Required

Apply the vendor-supplied update for the Acer Agent Service as documented in the Acer Community Article.
Restrict local administrative access on endpoints running NitroSense or PredatorSense to reduce the pool of users who can exercise the flaw.
Audit endpoints for unauthorized copies of the Acer Agent Service binaries that could be used offline to recover the key.

Patch Information

Acer has published guidance for this vulnerability in the Acer Community Article. Administrators should follow the vendor's instructions to update the Acer Agent Service, NitroSense, and PredatorSense to fixed versions.

Workarounds

Uninstall NitroSense and PredatorSense on systems where the utilities are not required.
Disable the Acer Agent Service where the OEM functionality is unnecessary, using the Windows Services console or sc.exe config "Acer Agent Service" start= disabled.
Enforce least-privilege on the endpoint to limit which local accounts can interact with the service or read its files.

bash

# Configuration example: disable the Acer Agent Service on Windows
sc.exe stop "Acer Agent Service"
sc.exe config "Acer Agent Service" start= disabled