Vulnerability Monitor

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CVE-2022-26413


A command injection vulnerability in the CGI program of Zyxel VMG3312-T20A firmware version 5.30(ABFX.5)C0 could allow a local authenticated attacker to execute arbitrary OS commands on a vulnerable device via a LAN interface.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.0, indicating it requires adjacent network access with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 64 products from zyxel, from zyxel, from zyxel and 61 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2022, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2022-04-11T13:15:07.763

Last Modified

2024-11-21T06:53:54.313

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.0 (HIGH)

CVSSv2 Vector

AV:A/AC:L/Au:S/C:C/I:C/A:C

  • Access Vector: ADJACENT_NETWORK
  • Access Complexity: LOW
  • Authentication: SINGLE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

5.1

Impact Score

10.0

Weaknesses
  • Type: Secondary
    CWE-78
  • Type: Primary
    CWE-78

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System zyxel vmg3312-t20a_firmware 5.30\(abfx.5\)c0 Yes
Hardware zyxel vmg3312-t20a - No
Operating System zyxel emg3525-t50b_firmware < 5.50\(abpm.6\)c0 Yes
Operating System zyxel emg3525-t50b_firmware < 5.50\(abpm.6\)c0 Yes
Hardware zyxel emg3525-t50b - No
Operating System zyxel emg5523-t50b_firmware < 5.50\(abpm.6\)c0 Yes
Operating System zyxel emg5523-t50b_firmware < 5.50\(abpm.6\)c0 Yes
Hardware zyxel emg5523-t50b - No
Operating System zyxel emg5723-t50k_firmware < 5.50\(abom.7\)c0 Yes
Hardware zyxel emg5723-t50k - No
Operating System zyxel emg6726-b10a_firmware < 5.13\(abnp.7\)c0 Yes
Hardware zyxel emg6726-b10a - No
Operating System zyxel vmg1312-t20b_firmware < 5.50\(absb.5\)c0 Yes
Hardware zyxel vmg1312-t20b - No
Operating System zyxel vmg3625-t50b_firmware < 5.50\(abpm.6\)c0 Yes
Hardware zyxel vmg3625-t50b - No
Operating System zyxel vmg3927-b50a_firmware < 5.17\(abmt.6\)c0 Yes
Hardware zyxel vmg3927-b50a - No
Operating System zyxel vmg3927-b50b_firmware < 5.13\(ably.7\)c0 Yes
Hardware zyxel vmg3927-b50b - No
Operating System zyxel vmg3927-b60a_firmware < 5.17\(abmt.6\)c0 Yes
Hardware zyxel vmg3927-b60a - No
Operating System zyxel vmg3927-t50k_firmware < 5.50\(abom.7\)c0 Yes
Hardware zyxel vmg3927-t50k - No
Operating System zyxel vmg4927-b50a_firmware < 5.13\(ably.7\)c0 Yes
Hardware zyxel vmg4927-b50a - No
Operating System zyxel vmg8623-t50b_firmware < 5.50\(abpm.6\)c0 Yes
Hardware zyxel vmg8623-t50b - No
Operating System zyxel vmg8825-b50a_firmware < 5.17\(abmt.6\)c0 Yes
Hardware zyxel vmg8825-b50a - No
Operating System zyxel vmg8825-b50b_firmware < 5.17\(abny.7\)c0 Yes
Hardware zyxel vmg8825-b50b - No
Operating System zyxel vmg8825-t50k_firmware < 5.50\(abom.7\)c0 Yes
Hardware zyxel vmg8825-t50k - No
Operating System zyxel vmg8825-b60a_firmware < 5.17\(abmt.6\)c0 Yes
Hardware zyxel vmg8825-b60a - No
Operating System zyxel vmg8825-b60b_firmware < 5.17\(abny.7\)c0 Yes
Hardware zyxel vmg8825-b60b - No
Operating System zyxel xmg3927-b50a_firmware < 5.17\(abmt.6\)c0 Yes
Hardware zyxel xmg3927-b50a - No
Operating System zyxel xmg8825-b50a_firmware < 5.17\(abmt.6\)c0 Yes
Hardware zyxel xmg8825-b50a - No
Operating System zyxel dx5401-b0_firmware < 5.17\(abyo.1\)c0 Yes
Hardware zyxel dx5401-b0 - No
Operating System zyxel ex3510-b0_firmware < 5.17\(abup.4\)c1 Yes
Hardware zyxel ex3510-b0 - No
Operating System zyxel ex5401-b0_firmware < 5.17\(abyo.1\)c0 Yes
Hardware zyxel ex5401-b0 - No
Operating System zyxel ex5501-b0_firmware < 5.17\(abry.2\)c0 Yes
Hardware zyxel ex5501-b0 - No
Operating System zyxel ax7501-b0_firmware < 5.17\(abpc.1\)c0 Yes
Hardware zyxel ax7501-b0 - No
Operating System zyxel ep240p_firmware < 5.40\(abh.0\)c0 Yes
Hardware zyxel ep240p - No
Operating System zyxel pm7300-t0_firmware < 5.42\(acbc.1\)c0 Yes
Hardware zyxel pm7300-t0 - No
Operating System zyxel pmg5317-t20b_firmware < 5.40\(abki.4\)c0 Yes
Hardware zyxel pmg5317-t20b - No
Operating System zyxel pmg5617ga_firmware < 5.40\(abna.2\)c0 Yes
Hardware zyxel pmg5617ga - No
Operating System zyxel pmg5617-t20b2_firmware < 5.41\(acbb.1\)c0 Yes
Hardware zyxel pmg5617-t20b2 - No
Operating System zyxel pmg5622ga_firmware < 5.40\(abnb.2\)c0 Yes
Hardware zyxel pmg5622ga - No
Operating System zyxel px7501-b0_firmware < 5.17\(abpc.1\)c0 Yes
Hardware zyxel px7501-b0 - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For zyxel's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.