HIGHVulnerability
CVE-2026-7273
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.
Properties
- severity
- HIGH
- product
- GS1900 Series Switches
- vulnerabilityName
- Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability
- dueDate
- 2026-09-24
- requiredAction
- 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 discon
- dateAdded
- 2026-09-21
- score
- 8.8
- cve_id
- CVE-2026-7273
- signal_observed_at
- 2026-09-21T23:06:15+00:00
- vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- vendorProject
- Zyxel
- published_at
- 2026-06-16T03:16:13.557
- last_modified
- 2026-09-21T20:17:32.970
Related Entities (4)
DESCRIBES (1)
←[KEVEntry]Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability
DESCRIBED_BY (1)
→[Source]NVD
HAS_WEAKNESS (1)
→[Weakness]Stack-based Buffer Overflow
KNOWN_EXPLOITED (1)
→[Source]CISA KEV
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