01 Record

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

MediumPUBLISHEDCNA: Arista

CNA base score5.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

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02 Description

03 Exploitation and scoring

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.52% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 44.3% of scored records. A rank, not a probability.

NVD base score

5.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published: 2025-01-10 20:06Z1 YR AGO
Last updated: 2025-01-10 21:12Z1 YR AGO
Reserved: 2024-07-01
Assigning CNA: Arista
Record state: PUBLISHED
Severity: Medium (CVSS 5.8)
CNA CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Weaknesses: No CWE assigned
Data version: 5.1
Document digest: dec1fb83c0789e4c540bd55ede0acf616fd7b54a4bba551f175f449cf2d5d2b0

05 Affected products

VendorProductVersionsPlatforms

Arista NetworksEOS-Policy Based Routing (PBR)4.32.0F to 4.32.1F, 4.31.0M to 4.31.4M, 4.30.0M to 4.30.7M, 4.29.0M to 4.29.9M, 4.28.0M to 4.28.11M, 4.27.0M to 4.27.12M, 4.26.0M to 4.26.14M, 4.25.0M to 4.25.11M, 4.24.0M to 4.24.11M, 4.23.0M to 4.23.15M, 4.22.0M to 4.22.13M, 4.21.0M to 4.21.15M—

Arista NetworksEOS - BGP Flowspec4.32.0F to 4.32.1F, 4.31.0M to 4.31.4M, 4.30.0M to 4.30.7M, 4.29.0M to 4.29.9M, 4.28.0M to 4.28.11M, 4.27.0M to 4.27.12M, 4.26.0M to 4.26.14M, 4.25.0M to 4.25.11M, 4.24.0M to 4.24.11M, 4.23.0M to 4.23.15M, 4.22.0M to 4.22.13M, 4.21.3F to 4.21.15M—

Arista NetworksEOS - Interface Traffic Policy4.32.0F to 4.32.1F, 4.31.0M to 4.31.4M, 4.30.0M to 4.30.7M, 4.29.0M to 4.29.9M, 4.28.0M to 4.28.11M, 4.27.2F to 4.27.12F—

06 References

www.arista.comhttps://www.arista.com/en/support/advisories-notices/security-advisory/20689-security-advisory-0108

07 Remediation

The recommended resolution is to upgrade to a remediated software version that contains the ip software forwarding options action drop CLI command, and configure the command at your earliest convenience. Arista recommends customers move to the latest version of each release that contains all the fixes listed below. For more information about upgrading see EOS User Manual: Upgrades and Downgrades https://www.arista.com/en/um-eos/eos-upgrades-and-downgrades CVE-2024-6437 has been fixed in the following releases: * 4.32.2F and later releases in the 4.32.x train * 4.31.5M and later releases in the 4.31.x train * 4.30.8M and later releases in the 4.30.x train * 4.29.10M and later releases in the 4.29.x train