CVE-2025-14957

LOW 3.3

WebAssembly Binaryen IRBuilder wasm-ir-builder.cpp makeLocalTee null pointer dereference

CVSS Score

3.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-476 CWE-404
Vendor	webassembly
Product	binaryen
Published	Dec 19, 2025
Last Updated	Feb 24, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

WebAssembly / Binaryen

125

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.337593 vuldb.com: https://vuldb.com/?ctiid.337593 vuldb.com: https://vuldb.com/?submit.717317 vuldb.com: https://vuldb.com/?submit.717319 github.com: https://github.com/WebAssembly/binaryen/issues/8090 github.com: https://github.com/WebAssembly/binaryen/pull/8099 github.com: https://github.com/oneafter/1204/blob/main/af1 github.com: https://github.com/WebAssembly/binaryen/commit/6fb2b917a79578ab44cf3b900a6da4c27251e0d4 github.com: https://github.com/WebAssembly/binaryen/

Credits

🔍 Oneafter (VulDB User)