CVE-2024-53429Public exploitNetwork attack vector

Remote process crash via inconsistent Variant dimensions

Published Nov 21, 2024 · Updated Dec 3, 2024

Reachable assertion in open62541 1.4.6 allows remote attackers to crash binary-decoding processes with crafted input. During UA binary decoding, a Variant's ArrayLength is not validated against its ArrayDimensions, so inconsistent values reach the fuzz_binary_decode assertion and abort the process. The published proof requires the OSS-Fuzz harness, while CISA rates the path as unauthenticated and network-reachable; impact is limited to a process crash.

CVSS severity7.5
High
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reachable assertion in open62541 1.4.6 allows remote attackers to crash binary-decoding processes with crafted input. During UA binary decoding, a Variant's ArrayLength is not validated against its ArrayDimensions, so inconsistent values reach the fuzz_binary_decode assertion and abort the process. The published proof requires the OSS-Fuzz harness, while CISA rates the path as unauthenticated and network-reachable; impact is limited to a process crash.

The record

CVE
CVE-2024-53429
Published
Nov 21, 2024
Updated
Dec 3, 2024
Vendor
o6 Automation GmbH
Product
open62541
Classifications
CWE-617, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.4.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

o6 Automation GmbH · open62541version=1.4.6

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo