CVE-2025-8873
📛 CVE Title
Arista: EOS: CVE-2025-8873: security-advisory-0127
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.
Overview
- State
- —
- Assigner (CNA)
- —
- CVSS severity
- high
- CVSS score
- 7.5 / 10
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C- Effective score
- 7.5 / 10 HIGH source: CNA overview
- CWE(s)
- —
- Reserved
- —
- Published
- 2025-11-18 00:00 UTC
- Last updated
- —
- Source
- https://www.rapid7.com/db/vulnerabilities/arista-eos-cve-2025-8873/
- Linked Threat
- CVE-2025-8873 — CVE-2025-8873
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-06-04 23:16:48 UTC
- NVD last modified
- 2026-07-22 20:10:00 UTC
- NVD CVSS v3.1
- 7.5 / 10 HIGH source: psirt@arista.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 3.6 / 10
- EPSS score
- 0.0039 (probability of exploitation in next 30 days)
- EPSS percentile
- 31.34% vs all CVEs — higher = more likely to be exploited, as of 2026-08-06
NVD-assigned CWE(s):
CWE-1286
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-08-06 20:42 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2025-210068
EUVD enrichment is queued; refresh the page in a few seconds.
Vendor references (0)
References embedded in the original CVE record by the assigning CNA.
None in the CVE record.
Web references (5)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://nvd.nist.gov/vuln/detail/CVE-2025-8873 tenable:nvd.nist.gov
- https://www.first.org/epss/ tenable:www.first.org
- https://attackerkb.com/topics/CVE-2025-8873 rapid7:attackerkb.com
- https://www.arista.com/en/support/advisories-notices/security-advisory/22869-security-advisory-0127 rapid7:www.arista.com
- https://www.cve.org/CVERecord?id=CVE-2025-8873 rapid7:www.cve.org
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
Remediations (20)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:cyberpress.org
Microsoft has rolled out a new cumulative update, KB5089573, for Windows 11 versions 25H2 and 24H2, directly addressing the frustrating installation failures that plagued users during May's Patch Tuesday cycle.
2026-06-04 08:47 UTC -
web:isc.sans.edu
Users should prioritize patching these vulnerabilities to prevent unauthorized code execution. Additionally, the Windows Kerberos Elevation of Privilege Vulnerability ( CVE - 2025 -53779), a disclosed zero-day, requires high privileges to exploit but could lead to domain administrator access, necessitating careful monitoring and mitigation .
2026-06-04 08:47 UTC -
web:krebsonsecurity.com
Microsoft today pushed updates to fix at least 56 security flaws in its Windows operating systems and supported software. This final Patch Tuesday of 2025 tackles one zero-day bug that is already ...
2026-06-04 08:47 UTC -
web:petri.com
If a Group Policy setting is available to roll back a fix , it is included in the Windows Update KB article and release notes as a mitigation for a known issue.
2026-06-04 08:47 UTC -
web:support.microsoft.com
This cumulative update for Windows 11, version 25H2 and 24H2 (KB5089573), includes production-quality improvements. Visit the Windows release health dashboard for the latest status on this release. Announcements and messages This section provides key notifications related to this release, including announcements, change logs, and end-of-support notices.
2026-06-04 08:47 UTC -
web:www.bleepingcomputer.com
Microsoft has released Windows 11 KB5079473 and KB5078883 cumulative updates for versions 25H2/24H2 and 23H2 to fix security vulnerabilities, bugs, and add new features.
2026-06-04 08:47 UTC -
web:www.computerworld.com
Each month, the team at Readiness analyzes the latest Patch Tuesday updates from Microsoft and provides detailed, actionable testing guidance. The company's Patch Tuesday release for February ...
2026-06-04 08:47 UTC -
web:www.lansweeper.com
Which vulnerabilities, issues, and other things did Microsoft update? Discover what's new using Lansweeper's Patch Tuesday May 2026 summary.
2026-06-04 08:47 UTC -
web:www.windowscentral.com
A faulty BitLocker configuration is forcing some PCs into BitLocker recovery mode after the April 2026 update, but there's a workaround to resolve this issue.
2026-06-04 08:47 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-06-04 08:47 UTC -
web:dailysecurityreview.com
Microsoft's Patch Provides the Only Effective Mitigation Updating Teams to the Latest Version Is Critical to Prevent Exploitation Microsoft addressed CVE - 2025 -53783 in its August 2025 Patch Tuesday release, which covered 110 vulnerabilities, including several rated higher in severity.
2026-06-19 02:34 UTC -
web:learn.microsoft.com
Windows 11, version 25H2 is now available for all eligible devices. Devices running Home and Pro editions of Windows 11 that are not managed by IT departments will receive the update to Windows 11, version 25H2 through the machine learning-based intelligent rollout.
2026-06-19 02:34 UTC -
web:nvd.nist.gov
An official website of the United States government Here's how you know
2026-06-19 02:34 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-06-19 02:34 UTC -
web:www.action1.com
This Patch Tuesday brings 55 vulnerability fixes from Microsoft, including six zero-days. Third-party overview includes actively exploited vulnerabilities in web browsers, Cisco, Fortinet, ServiceNow, Palo Alto, SAP, WordPress, Adobe, Oracle, and many more.
2026-06-19 02:34 UTC -
web:www.cisecurity.org
We recommend the following actions be taken: Apply appropriate patches or appropriate mitigations provided by Microsoft to vulnerable systems immediately after appropriate testing. (M1051: Update Software) Safeguard 7.1: Establish and Maintain a Vulnerability Management Process: Establish and maintain a documented vulnerability management process for enterprise assets. Review and update ...
2026-06-19 02:34 UTC -
web:www.crowdstrike.com
Microsoft has released security updates for 84 vulnerabilities, including 2 publicly disclosed zero-day and 8 critical, in its September 2025 Patch Tuesday rollout.
2026-06-19 02:34 UTC -
web:www.lansweeper.com
Which vulnerabilities, issues, and other things did Microsoft update? Discover what's new using Lansweeper's Patch Tuesday August 2025 summary.
2026-06-19 02:34 UTC -
web:www.nist.gov
NIST maintains the National Vulnerability Database (NVD), a repository of information on software and hardware flaws that can compromise computer security. This is a key piece of the nation's cybersecurity infrastructure.
2026-06-19 02:34 UTC -
web:www.rapid7.com
Microsoft is addressing 111 vulnerabilities this August 2025 Patch Tuesday, which is around average. This includes a single zero-day vulnerability in Windows Kerberos.
2026-06-19 02:34 UTC
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