CVE-2026-86106

Elevated command execution via unauthenticated HA peer functions

Published Sep 16, 2026 · Updated Sep 16, 2026

Missing authentication in Arista VeloCloud Edge allows remote attackers to execute elevated commands through the private HA interconnect. The private HA interconnect accepts sensitive peer-function requests without authenticating or otherwise verifying the requesting peer. Exploitation requires Active/Standby HA and Layer 2 access to the dedicated HA interconnect, and successful requests execute commands with elevated privileges.

CVSS severity9.6
Critical
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Arista VeloCloud Edge allows remote attackers to execute elevated commands through the private HA interconnect. The private HA interconnect accepts sensitive peer-function requests without authenticating or otherwise verifying the requesting peer. Exploitation requires Active/Standby HA and Layer 2 access to the dedicated HA interconnect, and successful requests execute commands with elevated privileges.

The record

CVE
CVE-2026-86106
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
Arista Networks
Product
VeloCloud SD-WAN Edge
Classifications
CWE-306, T1068
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <5.2.0.0
  2. Affected versionversion=5.2.0.0 <=5.2.6.x
  3. Affected versionversion=6.1.0 <=6.1.4.x
  4. Affected versionversion=6.4.0 <=6.4.1.x

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Arista Networks · VeloCloud SD-WAN Edgeversion=1.0.0 <5.2.0.0; version=5.2.0.0 <=5.2.6.x; version=6.1.0 <=6.1.4.x; version=6.4.0 <=6.4.1.x

Published CVSS scores

8.7Arista NetworksCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.6Arista NetworksCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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