CVE-2025-14957

LOW

WebAssembly Binaryen < 125 - Null Pointer Dereference in IRBuilder Local Access Functions

Title source: llm
STIX 2.1

Description

A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Such manipulation of the argument Index leads to null pointer dereference. Local access is required to approach this attack. The exploit is publicly available and might be used. The name of the patch is 6fb2b917a79578ab44cf3b900a6da4c27251e0d4. Applying a patch is advised to resolve this issue.

References (9)

Core 9
Core References
Third Party Advisory, VDB Entry vdb-entry technical-description
https://vuldb.com/?id.337593
Permissions Required, VDB Entry signature permissions-required
https://vuldb.com/?ctiid.337593
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.717317
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.717319
Exploit, Issue Tracking, Third Party Advisory issue-tracking
https://github.com/WebAssembly/binaryen/issues/8090

Scores

CVSS v3 3.3
EPSS 0.0018
EPSS Percentile 7.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-404 CWE-476
Status published
Products (1)
webassembly/binaryen < 125
Published Dec 19, 2025
Tracked Since Feb 18, 2026