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CVE-2023-40459

HighPublished

Improper input leads to DoS

Published: Dec 4, 2023
Updated: May 29, 2025
Assigning CNA: SWI
Evidence observed: Aug 8, 2026

Primary CVSS

7.5/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

2.3%

Low · next 30 days

Percentile: 82.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

The ACEManager component of ALEOS 4.16 and earlier does not adequately perform input sanitization during authentication, which could potentially result in a Denial of Service (DoS) condition for ACEManager without impairing other router functions. ACEManager recovers from the DoS condition by restarting within ten seconds of becoming unavailable.

Sources

CVE-2023-40459PoC
CVE-2023-40459 Unauthenticated DoS PoC Exploit
CVE-2023-40459PoC
PoC of CVE-2023-40459 (DoS on ACEmanager)

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