CVE-2025-2767 Arista NG Firewall User-Agent Cross-Site Scripting Remote Code Execution Vulnerability
Remote attackers can execute arbitrary code as root via XSS in the User-Agent header of Arista NG Firewall.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-2767?
CVE-2025-2767 is a high-severity cross-site scripting vulnerability in Arista NG Firewall, published on 23 Apr 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2025-2767?
It affects 1 product.
Products include Arista Ng Firewall.
How do I fix CVE-2025-2767?
No fix has been published for CVE-2025-2767 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-2767 being exploited?
There is no known exploitation of CVE-2025-2767 in the wild and no public exploit code.
Other vulnerabilities in Arista NG Firewall
- CVE-2024-9188 Specially constructed queries cause cross platform scripting leaking administrator tokens
- CVE-2024-27889 SQL injection in Arista Edge Threat Management - Arista NG Firewall (NGFW)
- CVE-2024-47519 Backup uploads to ETM subject to man-in-the-middle interception
- CVE-2024-9134 SQL injection in Arista Edge Threat Management
- CVE-2024-12832 Arista NG Firewall ReportEntry SQL Injection Arbitrary File Read and Write Vulnerability
Sources
Also known as GHSA-vcjh-9r25-r392.