CVE-2025-15411

WebAssembly wabt wasm-decompile InsertNode memory corruption

HIGH
7.8
CVSS Score
Published: January 1, 2026 at 07:32 PM UTC
Updated: October 7, 2026 at 11:10 AM UTC
1 product affected across 1 vendorWabt

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

A weakness has been identified in WebAssembly wabt up to 1.0.39. This vulnerability affects the function wabt::AST::InsertNode of the file /src/repro/wabt/bin/wasm-decompile of the component wasm-decompile. This manipulation causes memory corruption. It is possible to launch the attack on the local host. The exploit has been made available to the public and could be used for attacks. Unfortunately, the project has no active maintainer at the moment. In a reply to the issue report somebody recommended to the researcher to provide a PR himself.

Affected

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (7)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.339332
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.339332
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.719825
Issue TrackingExploitVendor Advisory
Source: cverecord
https://github.com/WebAssembly/wabt/issues/2679
Third Party Advisory
Source: cverecord
https://vuldb.com/?submit.736404
Product
Source: cverecord
https://github.com/WebAssembly/wabt/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-119

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