A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

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Vendors Products
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Gs1900-24 Firmware Subscribe
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Gs1900-24hpv2 Firmware Subscribe
Gs1900-48 Firmware Subscribe
Gs1900-48hpv2 Firmware Subscribe
Gs1900-8 Firmware Subscribe
Gs1900-8hp Firmware Subscribe
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 16 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 16 Jun 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Zyxel
Zyxel gs1900-10hp Firmware
Zyxel gs1900-16 Firmware
Zyxel gs1900-24 Firmware
Zyxel gs1900-24e Firmware
Zyxel gs1900-24ep Firmware
Zyxel gs1900-24hpv2 Firmware
Zyxel gs1900-48 Firmware
Zyxel gs1900-48hpv2 Firmware
Zyxel gs1900-8 Firmware
Zyxel gs1900-8hp Firmware
Vendors & Products Zyxel
Zyxel gs1900-10hp Firmware
Zyxel gs1900-16 Firmware
Zyxel gs1900-24 Firmware
Zyxel gs1900-24e Firmware
Zyxel gs1900-24ep Firmware
Zyxel gs1900-24hpv2 Firmware
Zyxel gs1900-48 Firmware
Zyxel gs1900-48hpv2 Firmware
Zyxel gs1900-8 Firmware
Zyxel gs1900-8hp Firmware

Tue, 16 Jun 2026 06:30:00 +0000

Type Values Removed Values Added
Description A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.
Weaknesses CWE-121
References
Metrics cvssV3_1

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


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Zyxel

Published:

Updated: 2026-06-16T12:38:27.302Z

Reserved: 2026-04-28T06:21:36.574Z

Link: CVE-2026-7273

cve-icon Vulnrichment

Updated: 2026-06-16T12:38:21.874Z

cve-icon NVD

Status : Deferred

Published: 2026-06-16T03:16:13.557

Modified: 2026-06-16T15:23:48.003

Link: CVE-2026-7273

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-16T08:30:03Z

Weaknesses