Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2025-14957

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.

Security Impact Summary

This vulnerability carries a LOW severity rating with a CVSS v3.1 score of 3.3, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts and limited availability for affected systems. Impacting 1 product from webassembly organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2025, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2025-12-19T17:15:51.657

Last Modified

2026-02-24T06:16:30.357

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 3.3 (LOW)

CVSSv2 Vector

AV:L/AC:L/Au:S/C:N/I:N/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.1

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-404
CWE-476
Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	webassembly	binaryen	≤ 125	Yes

References

https://github.com/WebAssembly/binaryen/ ([email protected])
https://github.com/WebAssembly/binaryen/commit/6fb2b917a79578ab44cf3b900a6da4c27251e0d4 Patch ([email protected])
https://github.com/WebAssembly/binaryen/issues/8090 Exploit, Issue Tracking, Third Party Advisory ([email protected])
https://github.com/WebAssembly/binaryen/pull/8099 Issue Tracking ([email protected])
https://github.com/oneafter/1204/blob/main/af1 Not Applicable ([email protected])
https://vuldb.com/?ctiid.337593 Permissions Required, VDB Entry ([email protected])
https://vuldb.com/?id.337593 Third Party Advisory, VDB Entry ([email protected])
https://vuldb.com/?submit.717317 Third Party Advisory, VDB Entry ([email protected])
https://vuldb.com/?submit.717319 Third Party Advisory, VDB Entry ([email protected])

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For webassembly's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.