WebAssembly Binaryen up to 125 IRBuilder wasm-ir-builder.cpp makeLocalTee Index null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k0.31

Summaryinfo

A vulnerability marked as problematic has been reported in WebAssembly Binaryen up to 125. This vulnerability affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Performing a manipulation of the argument Index results in null pointer dereference. This vulnerability was named CVE-2025-14957. The attack needs to be approached locally. In addition, an exploit is available. It is suggested to install a patch to address this issue. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Detailsinfo

A vulnerability, which was classified as problematic, was found 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. The manipulation of the argument Index with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-14957. The exploitability is told to be easy. An attack has to be approached locally. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 279444 (Linux Distros Unpatched Vulnerability : CVE-2025-14957), which helps to determine the existence of the flaw in a target environment.

Applying the patch 6fb2b917a79578ab44cf3b900a6da4c27251e0d4 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (279444). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.9

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CNA Base Score: 3.3
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 279444
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-14957

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 6fb2b917a79578ab44cf3b900a6da4c27251e0d4

Timelineinfo

12/19/2025 Advisory disclosed
12/19/2025 +0 days VulDB entry created
12/30/2025 +11 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 8090
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2025-14957 (🔒)
GCVE (CVE): GCVE-0-2025-14957
GCVE (VulDB): GCVE-100-337593
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/19/2025 09:58 AM
Updated: 12/30/2025 08:37 PM
Changes: 12/19/2025 09:58 AM (62), 12/20/2025 08:00 PM (2), 12/20/2025 09:28 PM (30), 12/30/2025 08:37 PM (11)
Complete: 🔍
Submitter: Oneafter
Cache ID: 244:81A:40

Submitinfo

Accepted

  • Submit #717317: WebAssembly binaryen e7706b3 Memory Corruption (by Oneafter)

Duplicate

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