CVE-2026-49190

Missing Per-Instruction Authorization Checks

Published Jun 4, 2026 CVSS 4.0 · 9.4 Critical EPSS < 1% KEV · Not listed
Description
The system fails to evaluate instructional permissions over multiple internal operation codes (opcodes), permitting unauthorized application installations or command executions.

Analysis

AI-generated

Technical impact

The vulnerability arises from a failure to enforce instruction‑level authorization checks, allowing an attacker to inject privileged operation codes. The flaw permits the installation of unauthorized applications or arbitrary command execution, compromising the router's integrity and potentially enabling remote control of the device. This constitutes a high‑severity flaw that violates the principle of least privilege.

Affected Systems

Vulnerable hardware consists of Acer's Connect M6E 5G Portable WiFi Router. No specific firmware version information was provided in the advisory.

Risk and Exploitability

The CVSS score of 9.4 indicates a critical impact, and the lack of an EPSS score means we cannot estimate current exploitation probability. The vulnerability is not listed in CISA's KEV catalog. An attacker could potentially trigger the bug through network traffic or a remote management interface, as no restriction on opcode execution is enforced. The absence of built-in authorization checks gives the attacker the ability to bypass normal security controls, making the attack path relatively straightforward if the device is reachable.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest firmware update from Acer that addresses the instruction‑level authorization issue.
  • Disable remote management features, such as Telnet, SSH, or web administration, unless absolutely necessary.
  • Restrict access to the router to trusted IP ranges and enforce strong passwords.
  • Monitor network traffic for anomalous command patterns that could indicate exploitation attempts.

Generated by OpenCVE AI on June 4, 2026 at 08:23 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Acer connect M6e 5g Portable Wifi Router
Vendors & Products Acer connect M6e 5g Portable Wifi Router
Type Values Removed Values Added
First Time appeared Acer
Acer connect M6e 5g
Acer connect M6e 5g Firmware
CPEs cpe:2.3:h:acer:connect_m6e_5g:-:*:*:*:*:*:*:*
cpe:2.3:o:acer:connect_m6e_5g_firmware:*:*:*:*:*:*:*:*
Vendors & Products Acer
Acer connect M6e 5g
Acer connect M6e 5g Firmware
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description The system fails to evaluate instructional permissions over multiple internal operation codes (opcodes), permitting unauthorized application installations or command executions.
Title Missing Per-Instruction Authorization Checks
Weaknesses CWE-78
References
Metrics cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}

Weaknesses
  • CWE-78

    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Sources

Status
PUBLISHED
Assigner
Acer
Published
Updated
Jun 4, 2026, 12:40 PM
Reserved
May 28, 2026, 2:46 AM
Status
Analyzed
Published
Jun 4, 2026, 7:16 AM
Modified
Jul 22, 2026, 8:10 PM