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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-2379

25
FAUCET Score

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.

First published: Jun 5, 2026Last modified: Jun 5, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.27.1F, < 4.28.0CPE match
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
>= 4.28.0F, < 4.29.0CPE match
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
>= 4.29.0F, < 4.30.0CPE match
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
>= 4.30.0F, < 4.31.0CPE match
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
>= 4.31.0M, <= 4.31.9MCPE match
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.2HIGH

CVSS: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:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
13.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 1st percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

arista.com / en/support/advisories-notices/security-advisory/23419-security-advisory-0134