VULNERABILITY INTELLIGENCE

CVE-2020-18378

CVSS score6.5 MEDIUM

EPSS probability0.61%

CISA KEVNot currently listed

Published2023-08-22

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Description

A NULL pointer dereference was discovered in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c in Binaryen 1.38.26. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm-as.

Weakness classification

nvd@nist.gov: CWE-476
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-476

Primary references

cve@mitre.org — Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Third Party Advisory