CVE-2025-2368Public exploitNetwork attack vector

Interpreter crash via unchecked export type index

Published Mar 17, 2025 · Updated Mar 17, 2025

Heap-buffer overflow in WABT 1.0.36 allows remote attackers to crash an interpreter process via a crafted WebAssembly module. BinaryReaderInterp::OnExport uses a malformed export item_index to subscript a type vector and calls Clone() on the out-of-bounds element, causing an invalid heap read. A user or service must cause the interpreter reader to process the file; the demonstrated consequence is a segmentation fault, not code execution.

CVSS severity8.8
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-buffer overflow in WABT 1.0.36 allows remote attackers to crash an interpreter process via a crafted WebAssembly module. BinaryReaderInterp::OnExport uses a malformed export item_index to subscript a type vector and calls Clone() on the out-of-bounds element, causing an invalid heap read. A user or service must cause the interpreter reader to process the file; the demonstrated consequence is a segmentation fault, not code execution.

The record

CVE
CVE-2025-2368
Published
Mar 17, 2025
Updated
Mar 17, 2025
Vendor
WebAssembly
Product
WABT
Classifications
CWE-122, CWE-119, CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 17, 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=1.0.36

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WebAssembly · WABTversion=1.0.36

Published CVSS scores

7.5VulDB CNAAV:N/AC:L/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
5.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

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-122Heap-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787Out-of-bounds Write
T1204.002User Execution: Malicious File

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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