CVE-2024-12830Network attack vector

Unauthenticated code execution via unvalidated file path

Published Dec 20, 2024 · Updated Dec 20, 2024

Path traversal in custom_handler in Arista Networks NG Firewall 17.1.1 and earlier allows remote attackers to execute arbitrary code. The method uses a user-supplied path in file operations without validating that the path remains within an intended directory. Remote exploitation is unauthenticated but requires Captive Portal to be installed, enabled, and configured with a custom page; code runs as www-data.

CVSS severity7.3
High
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in custom_handler in Arista Networks NG Firewall 17.1.1 and earlier allows remote attackers to execute arbitrary code. The method uses a user-supplied path in file operations without validating that the path remains within an intended directory. Remote exploitation is unauthenticated but requires Captive Portal to be installed, enabled, and configured with a custom page; code runs as www-data.

The record

CVE
CVE-2024-12830
Published
Dec 20, 2024
Updated
Dec 20, 2024
Vendor
Arista Networks
Product
Arista NG Firewall
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 20, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=17.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Arista Networks · Arista NG Firewallversion=17.1.1

Published CVSS scores

8.1Zero Day InitiativeCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
7.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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