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TI-2025-13641 Aliases CVE-2025-14956GHSA-vjgx-vcpf-hm6w

WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow

Priority LOW 21CWE-119Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00215 12th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WebAssemblyBinaryen125—No fix listedCNA
  • Binaryen VendorWebAssembly Affected 125 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:webassembly:binaryen:*:*:*:*:*:*:*:*up to 125VulnerableWebAssembly
  • cpe:2.3:a:webassembly:binaryen:*:*:*:*:*:*:*:* Versions up to 125 Vulnerable ·WebAssembly

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-14956
  2. 2026-10-03 Alias added: GHSA-vjgx-vcpf-hm6w

References

Exploit 2

Patch 1

Other 2

  • TI-2020-13374 Heap-buffer-overflow in /src/wasm/wasm-binary.cpp in… CVSS 3.1MEDIUM 6.5
  • TI-2020-13373 A NULL pointer dereference was discovered in SExpressionWasmBuilder::makeBlock in… CVSS 3.1MEDIUM 6.5
  • TI-2026-07277 WebAssembly Binaryen BrOn wasm-ir-builder.cpp makeBrOn assertion CVSS 4.0MEDIUM 4.8
  • TI-2021-20472 A Denial of Service vulnerability exits in Binaryen 103 due to an assertion abort in wasm::handle_unreachable. CVSS 3.1HIGH 7.5
  • TI-2019-05428 In Binaryen 1.38.22, there is a use-after-free problem in… CVSS 3.1MEDIUM 6.5
  • TI-2019-05400 An assertion failure was discovered in wasm::WasmBinaryBuilder::getType() in… CVSS 3.1MEDIUM 6.5
See all 24 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences