CVE-2026-49187: Acer Connect M6E 5G Unvalidated Resource Exposure

Technical summary

The vulnerability stems from hard-coded APK resource files that lack expiration mechanisms, combined with a shared access control mechanism (referred to as a 'scepter') that fails to enforce proper access boundaries. This is classified as an Information Disclosure issue (CWE-200). The attack vector is network-based, requires no authentication or user interaction, and can be exploited with low complexity. The CVSS 3.1 score of 7.5 (HIGH) reflects the high impact on confidentiality with no impact on integrity or availability, and assumes an unchanged security scope.

Business impact

Unauthorized access to embedded firmware resources could expose device configuration data, credentials, or other sensitive metadata. For enterprise deployments of Acer Connect M6E 5G gateways, this exposure creates risk of lateral movement, credential compromise, or reconnaissance for follow-on attacks. Organizations relying on these devices for network connectivity should prioritize assessment and patching to prevent information leakage that could be leveraged in broader security incidents.

Affected systems

Acer Connect M6E 5G and Acer Connect M6E 5G firmware are affected. The vulnerability resides in the hard-coded APK resource layer, so any deployment of these devices is potentially at risk. Verify your device firmware version against Acer's security advisories to confirm whether your specific installation is vulnerable.

Exploitability

The vulnerability is highly exploitable in practical terms: it requires only network access (no VPN or special network position), no authentication credentials, and no user interaction or social engineering. An attacker can probe for and extract resource files remotely. However, this vulnerability is not currently tracked on CISA's Known Exploited Vulnerabilities (KEV) catalog, suggesting that exploitation in the wild may not yet be widespread. Nevertheless, the ease of exploitation means that proactive patching is essential.

Remediation

Apply vendor security updates released by Acer for the Connect M6E 5G firmware. The updates should address the hard-coded resource file issue by implementing expiration mechanisms or access controls. If a firmware patch is not yet available from Acer, implement network segmentation to restrict unauthorized access to the device's APK resources, and monitor for suspicious extraction attempts. Verify patch availability and compatibility with your deployment before applying.

Patch guidance

Check Acer's official security advisory pages for the Connect M6E 5G product line for the latest firmware release notes and patch instructions. Firmware updates typically require device restart; plan updates during a maintenance window. Test patches in a non-production environment first to ensure compatibility with your network configuration. After patching, verify that the hard-coded resource expiration or access control mechanism is properly enforced by reviewing Acer's patch notes or conducting internal validation.

Detection guidance

Monitor network traffic for anomalous requests targeting APK resource endpoints on Connect M6E 5G devices. Look for patterns of resource enumeration or bulk resource downloads from external IP addresses. Enable device logging if available and review for unauthorized access attempts. Check device firmware versions against known vulnerable releases using Acer's product documentation. Network-based detection should focus on identifying connections attempting to access the shared 'scepter' mechanism or extract embedded resources without proper authorization.

Why prioritize this

This vulnerability scores 7.5 (HIGH) due to unauthenticated network exploitability and high confidentiality impact. While it does not enable code execution or service denial, the information exposure combined with ease of exploitation makes it a priority for organizations deploying these devices in production. The absence from the KEV catalog does not reduce urgency; patching should be scheduled promptly to close this reconnaissance and lateral movement vector.

Risk score, explained

CVSS 3.1 score of 7.5 reflects: Network Attack Vector (AV:N) = remote exploitability; Low Attack Complexity (AC:L) = no special conditions; No Privilege Required (PR:N) = unauthenticated; No User Interaction (UI:N) = automatic; High Confidentiality Impact (C:H) = sensitive data exposure; No Integrity or Availability Impact (I:N, A:N) = data not modified and service continues. The HIGH severity is appropriate for an information disclosure flaw affecting a network-connected device.

Frequently asked questions