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Reachable AssertionWeakness · CWE-617

CVE-2024-53429

HIGH · 7.5 CVSS v3.1 Published 2024-11-21
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Open62541 v1.4.6 is has an assertion failure in fuzz_binary_decode, which leads to a crash.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Open62541 v1.4.6 contains an assertion failure in the fuzz_binary_decode function that causes the application to crash, resulting in denial of service.

MitigationUpgrade to a patched version of Open62541 if available, or fix the assertion logic in fuzz_binary_decode to handle malformed binary input gracefully.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Open62541 installation
    Check for Open62541 libraries or binaries in your environment: look for files named libopen62541* or open62541, or check if your application links against libopen62541.so/.a
    Affected if Open62541 is present in the environment
  2. Determine the installed version
    Run 'pkg-config --modversion open62541' or check the library version via 'ldd your_application | grep open62541', or inspect the library file metadata for version 1.4.6
    Affected if The installed version is exactly v1.4.6
  3. Check for fuzz_binary_decode code presence
    Search for the string 'fuzz_binary_decode' in binary files or source code: use 'strings libopen62541.so | grep fuzz_binary' or grep the source code if accessible
    Affected if The fuzz_binary_decode function exists in the deployed binary or source code
  4. Verify binary protocol decoding is enabled
    Check application configuration or runtime settings for OPC UA binary protocol decoder usage; inspect if the server/client processes binary-encoded OPC UA messages
    Affected if Binary protocol decoding is actively used in the deployment

If Open62541 version 1.4.6 is deployed and the fuzz_binary_decode function is present in the binary with binary protocol decoding enabled, the environment is affected by this CVE.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade to a patched version of Open62541 if available, or fix the assertion logic in fuzz_binary_decode to handle malformed binary input gracefully.

Have this fixed Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,040
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-53429 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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