Low 3.3Published Dec 19, 2025

CVE-2025-14957WebAssembly Binaryen IRBuilder wasm-ir-builder.cpp makeLocalTee null pointer dereference

Updated under an hour ago (Oct 26, 2026, 8:50 PM ET)

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It affects WebAssembly Binaryen. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for WebAssembly Binaryen

Exploited in the last 30 days

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.

CVSS: 3.3 LOW (v3.1, CNA)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
Weakness (CWE): CWE-476, CWE-404
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Modified
Record last updated: Feb 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

WebAssembly Binaryen webassembly:binaryen	125	CNA record
webassembly binaryen webassembly:binaryen	through 125	NVD

References

References

https://vuldb.com/?id.337593	vdb-entry, technical-description, third-party-advisory
https://vuldb.com/?ctiid.337593	signature, permissions-required, vdb-entry
https://vuldb.com/?submit.717317	third-party-advisory, vdb-entry
https://vuldb.com/?submit.717319	third-party-advisory, vdb-entry
https://github.com/WebAssembly/binaryen/issues/8090	issue-tracking, exploit, third-party-advisory
https://github.com/WebAssembly/binaryen/pull/8099	issue-tracking
https://github.com/oneafter/1204/blob/main/af1	exploit, not-applicable
https://github.com/WebAssembly/binaryen/commit/6fb2b917a79578ab44cf3b900a6da4c27251e0d4	patch
https://github.com/WebAssembly/binaryen/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.