External risk intelligence

Acer Wave 7 Firmware Unauthenticated Log Access Exposes Credentials.

CVE advisorySeverity: CRITICAL (CVSS 10.0)

CVE-2026-49200

An unauthenticated vulnerability in Acer firmware allows access to a log file containing cleartext credentials via the web interface. This exposure could lead to unauthorized system access. Readers should care because sensitive login information may be compromised without proper authentication.An unauthenticated vulner

5Halo Surface Signal

Acer Wave 7 Firmware

t7c_gbl_1.01.000055 and earlier

External exposure likelihood

Halo Surface Signal score for CVE-2026-49200

The vulnerability exists in the web interface of device firmware, which is designed to be accessed over the network. Because it exposes sensitive credentials through an unauthenticated web endpoint in a device typically managed via such interfaces, it is considered public-facing by design in normal deployment scenarios.

PCI scan relevance

PCI Relevance for CVE-2026-49200

Yes

CVE-2026-49200 — Halo PCI Relevance: Yes. Under typical PCI ASV external scan criteria, this issue may be flagged for scan prioritization.

This vulnerability allows unauthenticated access to cleartext credentials, posing a significant risk to sensitive data and system access. Such unauthenticated access to credentials is a critical security concern under PCI DSS.

Scan-prioritization guidance only—not a PCI DSS certification or ASV attestation.

Horizon Alert

Summary of the vulnerability and why it matters

A security vulnerability has been identified in certain Acer device firmware, allowing unauthenticated access to a log file containing cleartext login credentials. This could enable unauthorized system access by exposing sensitive information through the web interface.

  • Sensitive credentials exposed via web interface.
  • Access to systems could be compromised.
  • Confirm relevance and ascertain exposure.

Attack Path

How an attacker could exploit the issue

An attacker can access the acer_cgi.log file through the device's web interface without needing any credentials. This log file contains sensitive information, specifically cleartext login credentials for both web and Telnet access. With these credentials, an attacker can then gain unauthorized access to the system.

  • No authentication required for access.
  • Log file exposes cleartext credentials.
  • Leads to unauthorized system access.

Live Threat

Current exploitation, exposure, and threat context

The `acer_cgi.log` file can be accessed without authentication through the web interface. This log file contains cleartext login credentials for both web and Telnet access, which could allow an attacker to gain unauthorized system access when supported by the advisory.

  • Unauthenticated access to device firmware logs.
  • Credentials exposed via accessible web interface.
  • Unauthorized system access may occur.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability likely impacts users of Acer Wave 7 firmware, potentially managed by IT infrastructure or platform teams responsible for network-connected devices. The immediate first step is to locate all instances of the affected firmware, determine their exposure and criticality, identify the accountable system owner, and then prioritize remediation efforts.

  • Identify device owners and exposure.
  • Verify web interface accessibility and logs.
  • Plan access control and firmware updates.

Frequently asked questions

What is Acer Wave 7 firmware and what is it used for?

Acer Wave 7 firmware is software that runs on Acer devices. It provides the core functionality for these devices, allowing them to operate and connect to networks, often through a web interface for management.

What kind of vulnerability does CVE-2026-49200 describe?

CVE-2026-49200 is a 'CWE-532' vulnerability, meaning it involves 'Insertion of Sensitive Information into Log File'. In this case, sensitive login credentials are written in plain text to a log file that can be accessed without authentication.

How could an attacker exploit this vulnerability?

An attacker would need to be able to access the device's web interface. Once they can reach the interface, they can directly access the `acer_cgi.log` file without needing any login information to see the credentials.

Who should be concerned about this threat?

Organizations with Acer Wave 7 devices that have their web interfaces accessible from the internet or other untrusted networks should be concerned. This is because the vulnerability is public-facing by design.

What is the first step to address this vulnerability?

The initial step is to identify all systems running the affected Acer Wave 7 firmware. It is also important to determine how these devices are exposed and who is responsible for their management and security.

References