What is CVE-2022-39974?

CVE-2022-39974 is a high-severity vulnerability in Wasm3 Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2022-09-20.

How severe is CVE-2022-39974?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2022-39974 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Wasm3 Project

CVE-2022-39974

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

Vulnerability class: Buffer Overflow

Published 2022-09-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.009 · change: +0.001

Affected products

Wasm3 Project — versions 0.5.0

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

github.com/wasm3/wasm3/issues/379 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2022-39974?: CVE-2022-39974 is a high-severity vulnerability in Wasm3 Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2022-09-20.
How severe is CVE-2022-39974?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2022-39974 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.