Read the docs
TI-2025-02419 Aliases CVE-2025-2767GHSA-vcjh-9r25-r392

Cross-site scripting in Arista NG Firewall

Priority MEDIUM 44CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

Arista NG Firewall User-Agent Cross-Site Scripting Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Arista NG Firewall. Minimal user interaction is required to exploit this vulnerability. The specific flaw exists within the processing of the User-Agent HTTP header. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of an arbitrary script. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-24407.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00654 51st 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
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
AristaNG Firewall17.1.1—No fix listedCNA
  • NG Firewall VendorArista Affected 17.1.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:arista:ng_firewall:17.1.1:*:*:*:*:*:*:*17.1.1VulnerableArista
  • cpe:2.3:a:arista:ng_firewall:17.1.1:*:*:*:*:*:*:* Versions 17.1.1 Vulnerable ·Arista

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-2767
  2. 2026-10-03 Alias added: GHSA-vcjh-9r25-r392
  3. 2026-10-21 EPSS moved to the 50th–90th percentile

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-2026-20726 Arista Edge Threat Management NGFW Captive Portal Custom Handler Command Injection CVSS 4.0HIGH 7.0
  • 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