CVE-2024-9188

High

Published: 10 January 2025

Published

10 January 2025

Modified

29 September 2025

KEV Added

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Patch

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CVSS Score 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Score 0.0056 68.5th percentile

Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-9188 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Arista Ng Firewall. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 31.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-15 (Information Output Filtering).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Validates specially constructed queries to block the cross-site scripting payload before it triggers administrator token leakage.

SI-15 Information Output Filtering good match

prevent

Filters information outputs to prevent execution of injected scripts that leak administrator tokens in cross-platform scripting attacks.

SI-2 Flaw Remediation good match

prevent

Remediates the specific XSS flaw through timely patching as recommended in Arista's security advisory, directly addressing the vulnerability.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1528 Steal Application Access Token Credential Access

Adversaries can steal application access tokens as a means of acquiring credentials to access remote systems and resources.

attack.mitre.org →

Why these techniques?

XSS vuln enables remote exploitation of public-facing web app (T1190) and direct theft of admin access tokens (T1528).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

Specially constructed queries cause cross platform scripting leaking administrator tokens

Deeper analysisAI

CVE-2024-9188 is a cross-site scripting (XSS) vulnerability, classified under CWE-79, where specially constructed queries trigger cross-platform scripting that leaks administrator tokens. It affects Arista Networks products, as indicated by the vendor's security advisory. The issue carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), reflecting high severity due to its potential for significant impact.

An unauthenticated remote attacker can exploit this vulnerability over the network with low complexity by tricking a user into processing a malicious query, which requires user interaction. Successful exploitation leaks administrator tokens, enabling high confidentiality, integrity, and availability impacts, potentially allowing attackers to escalate privileges or further compromise the affected system.

Arista's security advisory (https://www.arista.com/en/support/advisories-notices/security-advisory/20454-security-advisory-0105) provides details on the vulnerability, including recommended mitigations and patches for affected products. Security practitioners should consult this advisory for version-specific remediation steps.