CVE-2026-7273 | THREATINT

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.

PUBLISHED Reserved 2026-04-28 | Published 2026-06-16 | Updated 2026-06-16 | Assigner Zyxel

HIGH: 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-121 Stack-based buffer overflow

Product status

Default status

unaffected

<= 2.90(ABTQ.1)C0

affected

Default status

unaffected

<= 2.90(AAHH.1)C0

affected

Default status

unaffected

<= 2.90(AAHI.1)C0

affected

Default status

unaffected

<= 2.90(AAZI.1)C0

affected

Default status

unaffected

<= 2.90(AAHJ.1)C0

affected

Default status

unaffected

<= 2.90(AAHL.1)C0

affected

Default status

unaffected

<= 2.90(AAHK.1)C0

affected

Default status

unaffected

<= 2.90(ABTO.1)C0

affected

Default status

unaffected

<= 2.90(ABTP.1)C0

affected

Default status

unaffected

<= 2.90(AAHN.1)C0

affected

References

www.zyxel.com/...bility-in-gs1900-series-switches-06-16-2026 vendor-advisory

cve.org (CVE-2026-7273)

nvd.nist.gov (CVE-2026-7273)

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