Arista Edge Threat Management NGFW Captive Portal Encrypted Password Command Injection

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Summary

CVECVE-2026-25620
StatePUBLISHED
AssignerArista
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-05 20:17:30 UTC
Updated2026-06-05 20:48:41 UTC
DescriptionAn encrypted password command injection vulnerability exists in the Captive Portal application framework of Arista Edge Threat Management - Arista Next Generation Firewall (NGFW). This issue uniquely affects version 17.4.0; earlier software releases are not exposed.

Risk And Classification

Primary CVSS: v4.0 7 HIGH from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L/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:P/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-78 | CWE-78 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/C...
4.0CNACVSS7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L/S:P
3.1[email protected]Secondary6MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L
3.1CNACVSS6MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
None
Confidentiality
High
Integrity
Low
Availability
Low
Sub Conf.
Low
Sub Integrity
Low
Sub Availability
Low

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L/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:P/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Arista Networks Arista Edge Threat Management - Arista Next Generation Firewall NGFW affected 17.4.0 custom Arista Edge Threat Management - Arista Next Generation Firewall (Formerly Untangle)

References

ReferenceSourceLinkTags
www.arista.com/en/support/advisories-notices/security-advisory/22867-securit... [email protected] www.arista.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Jon Williams & Ronan Kervella from Bishop Fox (en)

Additional Advisory Data

Solutions

CNA: The recommended resolution is to upgrade to NGFW Version 17.4.1 at your earliest convenience.

Workarounds

CNA: If managing an active NGFW 17.4.0 deployment, disable the Captive Portal Basic Login configuration profile parameter.

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