CVE-2026-7273

Katalog CVE

CVSS 8.8 · High KEV · sudah dieksploitasi EPSS 2,5%

Kerentanan Stack-based Buffer Overflow pada zyxel gs1900-8 firmware, zyxel gs1900-8hp firmware +8 lainnya. Skor CVSS 3.1 8.8 (High) menurut zyxel.com.tw. Masuk katalog KEV CISA pada 21 September 2026, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

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.

Advisory KUTIM-CSIRT

• Peringatan Keamanan: Stack Overflow Switch Zyxel GS1900 (CVE-2026-7273) Dieksploitasi Aktif 22 Sep 2026

Rincian

Terbit di NVD

16 Juni 2026

Terakhir diubah

22 September 2026

Status NVD

Analyzed

CVSS 3.1

8.8 (High), sumber zyxel.com.tw
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-121: Stack-based Buffer Overflow

EPSS (30 hari)

2,5% peluang dieksploitasi; lebih tinggi dari 84,3% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability

Masuk KEV

21 September 2026

Tenggat CISA

24 September 2026 (untuk instansi federal AS)

Ransomware

Belum tercatat

Tindakan wajib

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-stack-based-buffer-ove... advisory vendor
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7273 advisory pihak ketiga · pemerintah AS
• https://www.greynoise.io/blog/open-season-on-kapibala-attacker-steals-government-records-wordpress-exploitatio... exploit · advisory pihak ketiga