CVE-2025-8873

highpriority · track · 0EPSS 0.004 · 32 %ileDEEUNL

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.39% (32nd) EPSS

CVSS 7.5 · high

Is it mine?

14 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · ncsc_nl

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · psirt@arista.comexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NCSC-NL NL

v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.08.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · psirt@arista.com

v4.06.6mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1286USCWE-1286US

affected products (14)

Products and version ranges known to be affected.

Arista EOS <4.31.9Mall versionscert_bundDE
Arista EOS <4.32.7Mall versionscert_bundDE
Arista EOS <4.33.5Mall versionscert_bundDE
Arista EOS <4.34.2Fall versionscert_bundDE
Arista EOS< 4.31.9Mcert_bundDE
Arista EOS< 4.32.7Mcert_bundDE
Arista EOS< 4.33.5Mcert_bundDE
Arista EOS< 4.34.2Fcert_bundDE
Arista Networks EOS≤ 4.30.0M ≤4.30.10Menisa_euvdEU
Arista Networks EOS≤ 4.32.0M ≤4.32.6.1Menisa_euvdEU
Arista Networks EOS≤ 4.29.0M ≤4.29.10.1Menisa_euvdEU
Arista Networks EOS≤ 4.33.0M ≤4.33.4Menisa_euvdEU
Arista Networks EOS≤ 4.31.0M ≤4.31.7.1Menisa_euvdEU
Arista Networks EOS≤ vers:unknown/*ncsc_nlNL

advisories (2)

Vendor and ecosystem advisories describing this.

NCSC-2025-0374Kwetsbaarheden verholpen in Arista EOSNL2025-11-20csaf · ncsc_nlNL
Arista heeft kwetsbaarheden verholpen in de Arista EOS-platform.
WID-SEC-W-2025-2639Arista EOS: Mehrere SchwachstellenDeutsch2025-11-18csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Arista EOS ausnutzen, um einen Denial of Service Angriff durchzuführen, und um seine Privilegien zu erhöhen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund ncsc_nl NVD CVE.org MITRE

published 2026-06-04modified 2026-07-22

references (3)

External citations — patches, advisories, analysis.

scry

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