CVE-2025-14956

LOW EPSS 7.9%
Published Dec 19, 20256mo ago · Modified Jun 17, 20261w ago
1.9 CVSS 4.0
Low
Find Similar
Published Dec 19, 2025 6mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
1.9
Exploitability
—
Impact
—
Vector string
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/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
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
7.9% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 3

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-122
CWE-125 Out-of-bounds Read Memory Safety

Affected Products 1

VendorProductVersionRange
webassemblybinaryen* ≤125

References 8

  • github.com https://github.com/WebAssembly/binaryen/
  • github.com https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398
    Patch
  • github.com https://github.com/WebAssembly/binaryen/issues/8089
    ExploitIssue TrackingThird Party Advisory
  • github.com https://github.com/WebAssembly/binaryen/pull/8092
    Issue Tracking
  • github.com https://github.com/oneafter/1204/blob/main/hbf
    Not Applicable
  • vuldb.com https://vuldb.com/?ctiid.337592
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.337592
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.717315
    ExploitThird Party AdvisoryVDB Entry

Remediation

  • github.com https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398
    Patch