CVE-2026-7273
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-121 |
| Vendor | zyxel |
| Product | gs1900-48hpv2 firmware |
| Published | Jun 16, 2026 |
| Last Updated | Jun 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Zyxel / GS1900-48HPv2 firmware
<= 2.90(ABTQ.1)C0
Zyxel / GS1900-8 firmware
<= 2.90(AAHH.1)C0
Zyxel / GS1900-8HP firmware
<= 2.90(AAHI.1)C0
Zyxel / GS1900-10HP firmware
<= 2.90(AAZI.1)C0
Zyxel / GS1900-16 firmware
<= 2.90(AAHJ.1)C0
Zyxel / GS1900-24 firmware
<= 2.90(AAHL.1)C0
Zyxel / GS1900-24E firmware
<= 2.90(AAHK.1)C0
Zyxel / GS1900-24EP firmware
<= 2.90(ABTO.1)C0
Zyxel / GS1900-24HPv2 firmware
<= 2.90(ABTP.1)C0
Zyxel / GS1900-48 firmware
<= 2.90(AAHN.1)C0