Security3 hSeptember 22, 2026, 12:31

CISA Adds Actively Exploited Zyxel Switch Flaw to KEV Catalog

CISA added the patched CVE-2026-7273 (CVSS 8.8) in Zyxel GS1900 switches to its Known Exploited Vulnerabilities catalog, citing active exploitation. The stack-based buffer overflow allows arbitrary code execution and SYSTEM-level access.

The Hacker News Open source

CISA Adds Actively Exploited Zyxel Switch Flaw to KEV Catalog

CVE-2026-7273 in Zyxel GS1900 rated CVSS 8.8
Stack-based buffer overflow enables arbitrary code execution
CISA added it to KEV catalog over active exploitation
Patch is available but devices remain under attack

#Zyxel#CISA

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