CVE-2024-35426Public exploitNetwork attack vector

Interpreter crash via crafted WebAssembly local declarations

Published Nov 8, 2024 · Updated Mar 18, 2025

Stack overflow in the VMIR e8117 parser allows attackers to crash the interpreter by supplying a crafted WebAssembly file. While parsing the module's local-variable declarations, init_local_vars fails to reject data that exhausts the native stack. Exploitation requires VMIR or an embedding application to load the malicious module; process termination is demonstrated, and the advisory also reports code execution.

CVSS severity9.8
Critical
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in the VMIR e8117 parser allows attackers to crash the interpreter by supplying a crafted WebAssembly file. While parsing the module's local-variable declarations, init_local_vars fails to reject data that exhausts the native stack. Exploitation requires VMIR or an embedding application to load the malicious module; process termination is demonstrated, and the advisory also reports code execution.

The record

CVE
CVE-2024-35426
Published
Nov 8, 2024
Updated
Mar 18, 2025
Vendor
Andreas Smas
Product
VMIR
Classifications
CWE-120, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 18, 2025Record 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=e8117

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Andreas Smas · VMIRversion=e8117

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1203Exploitation for Client Execution

Public exploit references

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

Technologies

Your stack

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Your stack

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