CVE-2025-14956

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 v3 5.3 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.1 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398	Patch
https://github.com/WebAssembly/binaryen/issues/8089	Exploit Issue Tracking Third Party Advisory
https://github.com/WebAssembly/binaryen/pull/8092	Issue Tracking
https://github.com/oneafter/1204/blob/main/hbf	Not Applicable
https://vuldb.com/?ctiid.337592	Permissions Required VDB Entry
https://vuldb.com/?id.337592	Third Party Advisory VDB Entry
https://vuldb.com/?submit.717315	Exploit Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2025-12-19 17:15

Updated : 2025-12-30 18:31

NVD link : CVE-2025-14956

Mitre link : CVE-2025-14956

CVE.ORG link : CVE-2025-14956

JSON object : View

Products Affected

webassembly

binaryen

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-122

Heap-based Buffer Overflow

CWE-125

Out-of-bounds Read

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