CVE-2025-2767

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

CVSS 8.8 HIGHEPSS 0.5%CWE-79

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.8EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

23 Apr 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Arista · NG Firewall

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References

https://www.zerodayinitiative.com/advisories/ZDI-25-181/