6.8
Moyenne
CVE-2026-20171 A vulnerability in the Border Gateway Protocol (BGP) enforce-first-as feature of Cisco Nexus 3000 Series…
Description
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.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| Cisco NX-OS Software | Versions non publiées |
Références
- cisco-sa-bgp-iefab-3hb2pwtx sec.cloudapps.cisco.com
Chronologie
- Publiée
- Dernière modification
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