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TI-2026-20726 Aliases CVE-2026-25622GHSA-4vmg-9v32-fh3f

Arista Edge Threat Management NGFW Captive Portal Custom Handler Command Injection

Priority MEDIUM 43CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

A Captive Portal Custom Handler command injection vulnerability exists in Arista Edge Threat Management - Arista Next Generation Firewall (NGFW). On affected platforms, an administrative account logged into the user interface can exploit this input handling behavior to execute arbitrary platform shell commands.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.09339 95th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AristaArista Edge Threat Management - Arista Next Generation Firewall (NGFW)up to 17.4.0—No fix listedCNA
  • Arista Edge Threat Management - Arista Next Generation Firewall (NGFW) VendorArista Affected up to 17.4.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:arista:ng_firewall:*:*:*:*:*:*:*:*before 17.4.1VulnerableArista
  • cpe:2.3:a:arista:ng_firewall:*:*:*:*:*:*:*:* Versions before 17.4.1 Vulnerable ·Arista

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Arista Edge Threat Management - Arista Next Generation Firewall (NGFW) — arista.com/en/support/advisories-notices/security-advisory/…

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-20727 Arista Edge Threat Management NGFW UI Arbitrary Command ExecutionPriority LOW 39
    • TI-2026-20725 Arista Edge Threat Management NGFW Reports Application Insecure Input ValidationPriority LOW 30
    • TI-2026-20728 Arista Edge Threat Management NGFW UI Administrative Cross-Site ScriptingPriority LOW 25
    Show all 4 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25622
  2. 2026-10-03 Alias added: GHSA-4vmg-9v32-fh3f
  3. 2026-10-25 EPSS moved to the 95th–99th percentile
  4. 2026-10-25 Priority changed: LOW → MEDIUM

References

Advisory 1

  • TI-2024-08481 The administrator is able to configure an insecure captive portal script CVSS 3.1CRITICAL 9.8
  • TI-2024-08482 A user with administrator privileges is able to retrieve authentication tokens CVSS 3.1MEDIUM 6.6
  • TI-2024-18496 SQL injection in Arista Edge Threat Management - Arista NG Firewall CVSS 3.1HIGH 8.8
  • TI-2025-02419 Cross-site scripting in Arista NG Firewall CVSS 3.1CRITICAL 9.6
  • TI-2026-20724 Arista Edge Threat Management NGFW Captive Portal Encrypted Password Command Injection CVSS 4.0HIGH 7.0
  • TI-2024-11889 OS command injection in Arista NG Firewall CVSS 3.1HIGH 8.8
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences