← Vulnerability feed

Vulnerability record · CVE-2022-26413 · published 11 April 2022

CVE-2022-26413: Zyxel vmg3312-t20a firmware os command injection vulnerability

Zyxel · Vmg3312 T20a Firmware

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.

8.0 CVSS 3.1 High EPSS 0.70% · top 48.9% CWE-78 · OS command injection
8.0CVSS 3.1 base score, v2 7.7
0.70%EPSS exploitation probability, 30 days
NoNot in CISA KEV
32Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

32 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.zyxel.com/support/OS-command-injection-and-buffer-overflow-vulnerabilities-of-CPE-and-ONTs.shtml Vendor Advisory
https://www.zyxel.com/support/OS-command-injection-and-buffer-overflow-vulnerabilities-of-CPE-and-ONTs.shtml Vendor Advisory

Track CVE-2022-26413 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-7673Zyxel emg3525-t50b firmware classic buffer overflow vulnerabilityA buffer overflow vulnerability in the URL parser of the zhttpd web server in Zyxel VMG8825-T50K firmware versions prior to V5.50(ABOM.5)C0 could all…EPSS 0.55%9.8CVE-2023-28769Zyxel dx5401-b0 firmware classic buffer overflow vulnerabilityThe buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1…EPSS 5.4%8.8CVE-2025-13943Zyxel ex5601-t1 firmware os command injection vulnerabilityA post-authentication command injection vulnerability in the log file download function of the Zyxel EX3301-T0 firmware versions through 5.50(ABVY.7)…EPSS 1.4%8.8CVE-2025-8693Zyxel dm4200-b0 firmware os command injection vulnerabilityA post-authentication command injection vulnerability in the "priv" parameter of Zyxel DX3300-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could …EPSS 1.1%8.8CVE-2022-43390Zyxel lte7480-m804 firmware os command injection vulnerabilityA command injection vulnerability in the CGI program of Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an authenticated attacker t…EPSS 1.1%7.5CVE-2025-6599Zyxel lte3301-plus firmware uncontrolled resource consumption vulnerabilityAn uncontrolled resource consumption vulnerability in the web server of Zyxel DX3301-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could allow an …EPSS 0.31%7.5CVE-2024-8748Zyxel lte3301-plus firmware classic buffer overflow vulnerabilityA buffer overflow vulnerability in the packet parser of the third-party library "libclinkc" in Zyxel VMG8825-T50K firmware versions through V5.50(ABO…EPSS 0.52%7.5CVE-2024-5412Zyxel nebula lte3301-plus firmware classic buffer overflow vulnerabilityA buffer overflow vulnerability in the library "libclinkc" of the Zyxel VMG8825-T50K firmware version 5.50(ABOM.8)C0 could allow an unauthenticated a…EPSS 0.66%

Source: NIST National Vulnerability Database (record CVE-2022-26413), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.