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.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00029.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
WebAssembly Binaryen affected
Version Status Constraints
125 affected —

Configuration 1 [-]

cpe:2.3:a:webassembly:binaryen:*:*:*:*:*:*:*:*

No data.

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Vendors Products
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Binaryen Subscribe

Project Subscriptions

Vendors Products
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Binaryen Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398 cve-icon cve-icon
https://github.com/WebAssembly/binaryen/issues/8089 cve-icon cve-icon
https://github.com/WebAssembly/binaryen/pull/8092 cve-icon cve-icon
https://github.com/oneafter/1204/blob/main/hbf cve-icon cve-icon
https://vuldb.com/?ctiid.337592 cve-icon cve-icon
https://vuldb.com/?id.337592 cve-icon cve-icon
https://vuldb.com/?submit.717315 cve-icon cve-icon
History

Tue, 30 Dec 2025 18:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125
CPEs cpe:2.3:a:webassembly:binaryen:*:*:*:*:*:*:*:*

Sun, 21 Dec 2025 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Webassembly
Webassembly binaryen
Vendors & Products Webassembly
Webassembly binaryen

Fri, 19 Dec 2025 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 19 Dec 2025 16:45:00 +0000

Type Values Removed Values Added
Description 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.
Title WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow
Weaknesses CWE-119
CWE-122
References
Metrics cvssV2_0

{'score': 4.3, 'vector': 'AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C'}

cvssV3_0

{'score': 5.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C'}

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2025-12-19T18:00:41.794Z

Reserved: 2025-12-19T08:38:51.694Z

Link: CVE-2025-14956

cve-icon Vulnrichment

Updated: 2025-12-19T17:24:58.226Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-19T17:15:51.470

Modified: 2025-12-30T18:31:52.237

Link: CVE-2025-14956

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-21T21:12:52Z

Weaknesses