Is CVE-2025-8873 actively exploited?

No active exploitation of CVE-2025-8873 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-8873 be exploited remotely?

Yes. CVE-2025-8873 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-8873?

CVE-2025-8873 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2025-8873

CWE-1286Published: June 4, 2026· Updated: Jun 5, 2026

7.5

CVSS v3.1

Official Description

On affected platforms running Arista EOS with IPsec configured, a specially crafted packet can cause the dataplane to stop processing all IPsec traffic. The control plane may detect this condition, and attempt to reset the IPsec processing pipeline. After reset traffic may not resume being processed. There is no impact to non-IPsec traffic or to IPsec traffic not originating or terminating on the system. This issue was reported by an Arista customer.

NVD Source

Technical Analysis

CVE-2025-8873 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.