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CVE-2026-7273

CVSS 8.8 · High EPSS 0.32% · P23

Affected Version Matrix 10

VendorProductVersion RangeStatus
ZyxelGS1900-10HP firmware<= 2.90(AAZI.1)C0affected
ZyxelGS1900-16 firmware<= 2.90(AAHJ.1)C0affected
ZyxelGS1900-24 firmware<= 2.90(AAHL.1)C0affected
ZyxelGS1900-24E firmware<= 2.90(AAHK.1)C0affected
ZyxelGS1900-24EP firmware<= 2.90(ABTO.1)C0affected
ZyxelGS1900-24HPv2 firmware<= 2.90(ABTP.1)C0affected
ZyxelGS1900-48 firmware<= 2.90(AAHN.1)C0affected
ZyxelGS1900-48HPv2 firmware<= 2.90(ABTQ.1)C0affected
ZyxelGS1900-8 firmware<= 2.90(AAHH.1)C0affected
ZyxelGS1900-8HP firmware<= 2.90(AAHI.1)C0affected
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I. Basic Information for CVE-2026-7273

Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
ZyxelGS1900-48HPv2 firmware <= 2.90(ABTQ.1)C0 -
ZyxelGS1900-8 firmware <= 2.90(AAHH.1)C0 -
ZyxelGS1900-8HP firmware <= 2.90(AAHI.1)C0 -
ZyxelGS1900-10HP firmware <= 2.90(AAZI.1)C0 -
ZyxelGS1900-16 firmware <= 2.90(AAHJ.1)C0 -
ZyxelGS1900-24 firmware <= 2.90(AAHL.1)C0 -
ZyxelGS1900-24E firmware <= 2.90(AAHK.1)C0 -
ZyxelGS1900-24EP firmware <= 2.90(ABTO.1)C0 -
ZyxelGS1900-24HPv2 firmware <= 2.90(ABTP.1)C0 -
ZyxelGS1900-48 firmware <= 2.90(AAHN.1)C0 -

II. Public POCs for CVE-2026-7273

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III. Intelligence Information for CVE-2026-7273

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Vendor Advisories for CVE-2026-7273 (1)

IV. Related Vulnerabilities

V. Comments for CVE-2026-7273

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