CVE-2026-50604 Overview
CVE-2026-50604 is a missing authentication vulnerability [CWE-306] in the Acer Agent Service component distributed with the NitroSense and PredatorSense utilities. The socket handshake process does not require authentication before granting access to service functionality. A local attacker can establish an unauthorized connection to the service and reach operations that should be restricted to authorized callers. Successful exploitation may allow tampering with functionality exposed by the agent, impacting the integrity and availability of the affected host.
Critical Impact
A local, unauthenticated caller can connect to the Acer Agent Service socket and invoke restricted functionality, undermining host integrity and availability.
Affected Products
- Acer Agent Service component bundled with NitroSense
- Acer Agent Service component bundled with PredatorSense
- Acer consumer laptops shipping NitroSense or PredatorSense utilities
Discovery Timeline
- 2026-09-17 - CVE-2026-50604 published to the National Vulnerability Database (NVD)
- 2026-09-17 - Last updated in the NVD database
Technical Details for CVE-2026-50604
Vulnerability Analysis
The Acer Agent Service exposes an inter-process communication channel through a local socket. Client utilities such as NitroSense and PredatorSense connect to this socket to control system tuning features exposed by the agent. The service is expected to validate that connecting clients are authorized before honoring requests. In vulnerable builds this validation is absent during the handshake phase, so any local process can complete the connection and issue commands intended for authorized clients.
The underlying weakness maps to CWE-306: Missing Authentication for Critical Function. Because the attack vector is local and requires no privileges or user interaction, any user session on the host, including low-privilege accounts, can reach the vulnerable interface. The impact centers on integrity and availability of functionality exposed by the agent rather than direct confidentiality loss.
Root Cause
The root cause is an incomplete socket handshake. The service accepts connections and processes requests without verifying the caller's identity, token, or process context. Trust is implicitly extended to any local connection, so authorization checks that gate privileged operations never execute.
Attack Vector
Exploitation requires local access to a system with a vulnerable Acer Agent Service installed. An attacker with an interactive or programmatic session opens the service's IPC socket, completes the handshake, and issues commands that would normally require an authorized client. See the Acer Community Support Article for vendor guidance.
No verified proof-of-concept code is published. The vulnerability manifests in the socket handshake path of the Acer Agent Service, where authentication is expected but not enforced.
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Stop Identity AttacksDetection Methods for CVE-2026-50604
Indicators of Compromise
- Unexpected local processes opening connections to the Acer Agent Service IPC socket outside of the NitroSense or PredatorSense executables.
- Configuration changes to fan curves, thermal profiles, or system tuning parameters that were not initiated by an authorized administrator.
- Acer Agent Service log entries showing client sessions originating from non-standard binaries or unusual user contexts.
Detection Strategies
- Inventory endpoints for the presence of NitroSense, PredatorSense, and the Acer Agent Service, then correlate against the installed version.
- Monitor for child processes and command-line activity spawned by the Acer Agent Service that deviate from a baseline of legitimate client interactions.
- Alert on non-vendor processes establishing IPC connections to the agent, using endpoint telemetry that captures named pipe or local socket activity.
Monitoring Recommendations
- Enable process creation and IPC connection telemetry on Acer consumer laptops managed by the enterprise.
- Forward Acer Agent Service and Windows Application event logs to a central SIEM for retention and correlation.
- Track patch compliance for NitroSense and PredatorSense across the fleet and flag hosts that remain on vulnerable versions.
How to Mitigate CVE-2026-50604
Immediate Actions Required
- Apply the updated NitroSense, PredatorSense, and Acer Agent Service packages published by Acer as soon as they are available in your region.
- Restrict interactive and remote logon rights on affected laptops to trusted users, since the vulnerability requires only local access.
- Audit installed software to identify hosts running the vulnerable Acer Agent Service and prioritize them for remediation.
Patch Information
Acer has published remediation guidance in the Acer Community Support Article. Administrators should follow the vendor instructions to update the Acer Agent Service, NitroSense, and PredatorSense components to a version that enforces authentication during the socket handshake.
Workarounds
- Uninstall NitroSense and PredatorSense on systems where the tuning features are not required, which removes the Acer Agent Service.
- Disable the Acer Agent Service through the Services console on hosts that cannot be patched immediately, accepting the loss of vendor tuning functionality.
- Limit local user accounts on affected devices and enforce least privilege to reduce the population able to reach the local attack surface.
# Disable and stop the Acer Agent Service on Windows until a patch is applied
sc.exe stop "AcerAgentService"
sc.exe config "AcerAgentService" start= disabled
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
