High 7.1Published Dec 19, 2025

CVE-2025-14956A vulnerability was determined in WebAssembly Binaryen up to 125.

Updated under an hour ago (2026-10-19 06:30 UTC)

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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 determined in WebAssembly Binaryen up to 125. Affected by this issue is the function WasmBinaryReader::readExport of the file src/wasm/wasm-binary.cpp. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Patch name: 4f52bff8c4075b5630422f902dd92a0af2c9f398. It is recommended to apply a patch to fix this issue.

CVSS: 7.1 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weakness (CWE): CWE-119, CWE-122, CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

webassembly binaryen webassembly:binaryen	through 125	NVD

References

https://github.com/WebAssembly/binaryen/
https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398patch
https://github.com/WebAssembly/binaryen/issues/8089exploit, issue-tracking, third-party-advisory
https://github.com/WebAssembly/binaryen/pull/8092issue-tracking
https://github.com/oneafter/1204/blob/main/hbfnot-applicable
https://vuldb.com/?ctiid.337592permissions-required, vdb-entry
https://vuldb.com/?id.337592third-party-advisory, vdb-entry
https://vuldb.com/?submit.717315exploit, third-party-advisory, vdb-entry

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.