← Incidents
INCIDENT 626Exploited vulnerabilityHIGH CONFIDENCESourced
CVE-2026-7273 added to CISA KEV: Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability
<p>CISA has added one new vulnerability to its <a href="https://www.cisa.gov/known-exploited-vulnerabilities-catalog">Known Exploited Vulnerabilities (KEV) Catalog</a>, based on evidence of active exploitation.</p> <ul> <li><a href="https://www.cve.org/CVERecord?id=CVE-2026-7273" target="_blank">CVE-2026-7273</a> Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability</li> </ul> <p>This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise. </p> <p><a href="https://www.cisa.gov/news-events/directi…
Last evidence update
21 SEP 2026 · 12:00 UTC
Source count
3
Status
high confidence
GovernmentCVE-2026-7273
Observation history
How this record has evolved as evidence accumulated.
22 SEP · 05:22 UTC
Initial report
22 SEP · 05:22 UTC
Second independent source
22 SEP · 05:22 UTC
Summary updated from new evidence
23 SEP · 05:22 UTC
Second independent source
23 SEP · 05:22 UTC
Confidence upgraded
23 SEP · 05:22 UTC
Status changed
Evidence