Cisco Nx Os Software
Monthly
Remote code execution in the Silicon One integration of Cisco Nexus 9000 Series Switches (Cisco NX-OS Software) lets an unauthenticated attacker run code as root by connecting to TCP ports 43210 and 43211, which are exposed by default in the Layer 3 default VRF. Crafted input to the S1HAL process is executed with root privileges, and the same flaw can crash S1HAL to force a device reload (denial of service). Rated CVSS 9.8; no public exploit identified at time of analysis and the CVE is not listed in CISA KEV, but the pre-authentication, network-facing nature makes it a top-priority patch.
BGP session flapping denial-of-service in Cisco NX-OS on Nexus 3000 and 9000 Series Switches exposes data-center routing infrastructure to disruption from unauthenticated remote attackers. The flaw resides in the enforce-first-as BGP feature, where incorrect parsing of a transitive BGP attribute causes an affected switch to drop its BGP peer session and enter a flap loop upon receiving a crafted BGP UPDATE message. No active exploitation has been confirmed (not in CISA KEV), and no public exploit code has been identified at time of analysis, though the Changed scope in the CVSS vector reflects that the instability can propagate beyond the directly attacked peer, amplifying network-wide impact.
Remote code execution in the Silicon One integration of Cisco Nexus 9000 Series Switches (Cisco NX-OS Software) lets an unauthenticated attacker run code as root by connecting to TCP ports 43210 and 43211, which are exposed by default in the Layer 3 default VRF. Crafted input to the S1HAL process is executed with root privileges, and the same flaw can crash S1HAL to force a device reload (denial of service). Rated CVSS 9.8; no public exploit identified at time of analysis and the CVE is not listed in CISA KEV, but the pre-authentication, network-facing nature makes it a top-priority patch.
BGP session flapping denial-of-service in Cisco NX-OS on Nexus 3000 and 9000 Series Switches exposes data-center routing infrastructure to disruption from unauthenticated remote attackers. The flaw resides in the enforce-first-as BGP feature, where incorrect parsing of a transitive BGP attribute causes an affected switch to drop its BGP peer session and enter a flap loop upon receiving a crafted BGP UPDATE message. No active exploitation has been confirmed (not in CISA KEV), and no public exploit code has been identified at time of analysis, though the Changed scope in the CVSS vector reflects that the instability can propagate beyond the directly attacked peer, amplifying network-wide impact.