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CVE-2026-20171

MEDIUM · CVSS 6.8 EPSS %0.47 Public Exploit

Kaynak: NVD + CISA KEV + EPSS · Yayınlanma: 2026-05-20T17:16:19.813 · Çekilme zamanı: 2026-06-17T12:01:27.334230+00:00

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Public Exploit Sinyali

Bu CVE için açıklama veya referanslarda public exploit / PoC / GitHub / Metasploit sinyali tespit edildi.

Tespit Edilen Sinyaller
exploit

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CVE
CVE-2026-20171
Severity
MEDIUM
CVSS
6.8
EPSS
%0.47
Cisco

Orijinal NVD Açıklaması

A vulnerability in the Border Gateway Protocol (BGP) enforce-first-as feature of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, remote attacker to trigger BGP peer flaps, resulting in a denial of service (DoS) condition. This vulnerability is due to incorrect parsing of a transitive BGP attribute. An attacker could exploit this vulnerability by sending a crafted BGP update through an established BGP peer session. If the update propagates to an affected device, it could cause the device to drop the BGP session and flap with the BGP peer that is forwarding this update, resulting in a DoS condition.