Paper/Archive/CVE-2025-2767

CVE-2025-2767

Arista NG Firewall — Arista NG Firewall User-Agent Cross-Site Scripting Remote Code Execution Vulnerability

CVSS 9.6 (NVD)9.6 / 10 × 3028.8 Not in CISA KEV+300.0 EPSS percentile 51.3.513 × 2010.3 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

NG Firewall17.1.1–CNA

Scores by source

NVD9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

zdi (CNA)8.8CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refzerodayinitiative.com/advisories/ZDI-25-181