CVE-2025-14957

Name: CVE-2025-14957
Creator: NVD / NIST
Published: 2025-12-19T17:15:51.657+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.9/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2025-14957 is a low-severity vulnerability rated 1.9/10 on the CVSS scale. 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. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS 4.0

1.9/10

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.18%

7.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Webassembly	Binaryen	<= 125

References

https://github.com/WebAssembly/binaryen/
https://github.com/WebAssembly/binaryen/commit/6fb2b917a79578ab44cf3b900a6da4c27251e0d4Patch
https://github.com/WebAssembly/binaryen/issues/8090Exploit, Issue Tracking, Third Party Advisory
https://github.com/WebAssembly/binaryen/pull/8099Issue Tracking
https://github.com/oneafter/1204/blob/main/af1Not Applicable
https://vuldb.com/?ctiid.337593Permissions Required, VDB Entry
https://vuldb.com/?id.337593Third Party Advisory, VDB Entry
https://vuldb.com/?submit.717317Third Party Advisory, VDB Entry
https://vuldb.com/?submit.717319Third Party Advisory, VDB Entry

Timeline

Published: Dec 19, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-14957?

How severe is CVE-2025-14957?

CVE-2025-14957 has a CVSS score of 1.9/10 (LOW severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2025-14957?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-14957?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST