What is CVE-2021-46326?

CVE-2021-46326 is a high-severity vulnerability in Moddable Sdk, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2022-01-20.

How severe is CVE-2021-46326?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Moddable Sdk

CVE-2021-46326

Moddable SDK v11.5.0 was discovered to contain a heap-buffer-overflow via the component __asan_memcpy.

Vulnerability class: Buffer Overflow

Published 2022-01-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Moddable Sdk — versions 11.5.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/Moddable-OpenSource/moddable/issues/759 (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-46326?: CVE-2021-46326 is a high-severity vulnerability in Moddable Sdk, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2022-01-20.
How severe is CVE-2021-46326?: High severity. CVSS v3 base score is 7.8 out of 10.