🛡️ CVE-2022-39974 — pywasm3

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-119 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

WASM3 Improper Input Validation vulnerability

WASM3 v0.5.0 was discovered to contain a segmentation fault via the component op_Select_i32_srs in wasm3/source/m3_exec.h.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2022-39974 is classified as CWE-119: Improper Restriction of Operations within Memory Buffer Bounds. A read or write is performed without confirming it stays inside the allocated buffer, corrupting adjacent memory.

Affected software

CVE-2022-39974 is recorded against 2 packages.

  • pywasm3
  • wasm3

Timeline and source

Published on 21 September 2022 and last revised on 10 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-119
Public Exploit ✅ No
Source OSV
Published 2022-09-21
Updated 2026-08-12
Modified 2026-06-10
Fix URL N/A

Affected Packages

Software From version Fixed in
pywasm3 — —
wasm3 — —

Similar Threats

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