CVE-2025-2767: Arista NG Firewall User-Agent Cross-Site Scripting Remote Code Execution Vulnerability
Description
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.
Classification
CVE ID: CVE-2025-2767
CVSS Base Severity: HIGH
CVSS Base Score: 8.8
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Problem Types
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Affected Products
Vendor: Arista
Product: NG Firewall
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.22% (probability of being exploited)
EPSS Percentile: 45.31% (scored less or equal to compared to others)
EPSS Date: 2025-05-22 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-2767https://www.zerodayinitiative.com/advisories/ZDI-25-181/