CVE-2026-2379

mediumpriority · track · 0EPSS 0.002 · 13 %ileDEEU

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.23% (13th) EPSS

CVSS 5.9 · medium

Is it mine?

18 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-27

On affected platforms with hardware IPSec support running Arista EOS with certain IPsec features enabled, EOS may exhibit unexpected behavior in specific cases. Physical interface flaps and certain agent restarts can cause IPsec tunnel re-establishment with existing Security Associations, resulting in sequence number mismatches between tunnel endpoints potentially causing unstable communication.

cvss

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

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–8.2

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · psirt@arista.comexploitability 2.2 · impact 3.6

v4.08.2highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.08.2highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/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

v4.04.6mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/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.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-672US

affected products (18)

Products and version ranges known to be affected.

Arista EOS <4.31.10Mall versionscert_bundDE
Arista EOS <4.32.8Mall versionscert_bundDE
Arista EOS <4.33.6Mall versionscert_bundDE
Arista EOS <4.34.4Mall versionscert_bundDE
Arista EOS <4.35.0Fall versionscert_bundDE
Arista EOS< 4.31.10Mcert_bundDE
Arista EOS< 4.32.8Mcert_bundDE
Arista EOS< 4.33.6Mcert_bundDE
Arista EOS< 4.34.4Mcert_bundDE
Arista EOS< 4.35.0Fcert_bundDE
Arista Networks EOS≤ 4.31.0M ≤4.31.9Menisa_euvdEU
Arista Networks EOS≤ 4.34.0 ≤4.34.3Menisa_euvdEU
Arista Networks EOS≤ 4.33.0M ≤4.33.5Menisa_euvdEU
Arista Networks EOS≤ 4.32.0M ≤4.32.7Menisa_euvdEU
Arista Networks EOS4.27.1F → 4.28.0enisa_euvdEU
Arista Networks EOS4.28.0F → 4.29.0enisa_euvdEU
Arista Networks EOS4.29.0F → 4.30.0enisa_euvdEU
Arista Networks EOS4.30.0F → 4.31.0enisa_euvdEU

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0432Arista EOS: Schwachstelle ermöglicht Offenlegung von InformationenDeutsch2026-02-17csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Arista EOS ausnutzen, um Informationen offenzulegen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund NVD CVE.org MITRE

published 2026-06-05modified 2026-10-26

references (3)

External citations — patches, advisories, analysis.

scry

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