Is CVE-2025-8873 in the CISA KEV catalog?

No. CVE-2025-8873 is not currently on the CISA Known Exploited Vulnerabilities list.

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

CVE-2025-8873 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2025-8873?

CVE-2025-8873 has an EPSS score of 0.39% (31th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2025-8873?

No published fix for CVE-2025-8873 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2025-8873

HIGH

7.5

CVSS v3

NVD

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.

CWE-1286

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.39%probability of exploitation in 30 days

31stpercentile

Low risk: more likely to be exploited than 31% of all known CVEs.

References

Other references1

arista.com

Related Vulnerabilities

Other CWE-1286 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-7954	Critical	9.8	90%	-	Fix
CVE-2025-13878	High	7.5	8.2%	-	Fix
CVE-2024-51983	High	7.5	7.8%	-	-
CVE-2026-21527	High	6.5	7.7%	-	Fix
CVE-2024-51982	High	7.5	7.1%	-	-
CVE-2023-27043	Medium	5.3	2.5%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-05.