CVE-2025-2767CRITICAL 9.6EPSS p38.9%

CVE-2025-2767CVE-2025-2767

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.

Scoring

CVSS 3.19.6 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS0.50% probability of exploitation · percentile 38.9% · 2026-06-19T12:03:05Z
Published2025-04-23
Last modified2025-08-14

Underlying weaknesses· 1

CWE-79

References

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

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting')cwe-790%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2026-25623
CVE
CVE-2026-25624
CVE
CVE-2026-25622
CVE
CVE-2026-25620
CVE
CVE-2025-20363
CVE
CVE-2026-25621
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.