CVE-2026-7273
- State
- Published
- Severity
- 8.8 High
- Published
- Jun 16, 2026
- Updated
- Sep 22, 2026
- Reserved
- Apr 28, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Zyxel |
Weaknesses
- CWE-121 Stack-based buffer overflow
Affected Products
| Product | Versions |
|---|---|
GS1900-48HPv2 firmwareZyxel |
|
GS1900-8 firmwareZyxel |
|
GS1900-8HP firmwareZyxel |
|
GS1900-10HP firmwareZyxel |
|
GS1900-16 firmwareZyxel |
|
GS1900-24 firmwareZyxel |
|
GS1900-24E firmwareZyxel |
|
GS1900-24EP firmwareZyxel |
|
GS1900-24HPv2 firmwareZyxel |
|
GS1900-48 firmwareZyxel |
|
References
- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-stack-based-buffer-overflow-vulnerability-in-gs1900-series-switches-06-16-2026vendor-advisory
- https://www.greynoise.io/blog/open-season-on-kapibala-attacker-steals-government-records-wordpress-exploitationthird-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7273government-resource
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.