First published · Last updated
CVE-2026-7273: Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability
A stack-based buffer overflow in the Zyxel GS1900 series CGI program could allow a LAN-based, unauthenticated attacker to execute OS commands via a crafted HTTP request. The source instructs applying vendor mitigations and following CISA's BOD 26-04 and forensics triage guidance.
Categories: technology
Generated scores
Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.
- Confidence
- 6/10
- Geographic reach
- 3/10
- Global importance
- 3/10
- Impact magnitude
- 4/10
- Positivity
- 2/10
- Urgency
- 7/10
Why it matters
Potential unauthenticated command execution on network switches requires stakeholders to apply mitigations and follow CISA guidance.

