What’s Vulnerable › Vulnerabilities
CVE-2024-6437: On affected platforms running Arista EOS with one of the following features configured to redirect IP traffic to a next hop: policy-based routing (PBR), BGP Flowspec, or interface traffic policy -- certain IP traffic such as IPv4 packets with IP options ma
- Severity: medium (CVSS 5.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-01-10 · updated 2026-06-17
Description
On affected platforms running Arista EOS with one of the following features configured to redirect IP traffic to a next hop: policy-based routing (PBR), BGP Flowspec, or interface traffic policy -- certain IP traffic such as IPv4 packets with IP options may bypass the feature's set nexthop action and be slow-path forwarded (FIB routed) by the kernel as the packets are trapped to the CPU instead of following the redirect action's destination.
Affected products
- Arista Networks EOS-Policy Based Routing (PBR): from 4.32.0F through 4.32.1F; from 4.31.0M through 4.31.4M; from 4.30.0M through 4.30.7M; from 4.29.0M through 4.29.9M; from 4.28.0M through 4.28.11M; from 4.27.0M through 4.27.12M
- Arista Networks EOS - BGP Flowspec: from 4.32.0F through 4.32.1F; from 4.31.0M through 4.31.4M; from 4.30.0M through 4.30.7M; from 4.29.0M through 4.29.9M; from 4.28.0M through 4.28.11M; from 4.27.0M through 4.27.12M
- Arista Networks EOS - Interface Traffic Policy: from 4.32.0F through 4.32.1F; from 4.31.0M through 4.31.4M; from 4.30.0M through 4.30.7M; from 4.29.0M through 4.29.9M; from 4.28.0M through 4.28.11M; from 4.27.2F through 4.27.12F
References
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