What is CVE-2021-44283?

CVE-2021-44283 is a high-severity vulnerability in Shieldstore Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2023-05-09.

How severe is CVE-2021-44283?

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

Buffer overflow in Shieldstore Project

CVE-2021-44283

A buffer overflow in the component /Enclave.cpp of Electronics and Telecommunications Research Institute ShieldStore commit 58d455617f99705f0ffd8a27616abdf77bdc1bdc allows attackers to cause an information leak via a crafted structure from an untrusted operating system.

Vulnerability class: Buffer Overflow

Published 2023-05-09 · last modified 2026-07-09.

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:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Shieldstore Project

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

af854a3a-2127-422b-91ae-364da2661108 (Broken Link)
af854a3a-2127-422b-91ae-364da2661108 (Broken Link)
github.com/cocoppang/ShieldStore/blob/master/Enclave/Enclave.cpp (Patch)
github.com/cocoppang/ShieldStore/issues/19 (Exploit, Issue Tracking)

Frequently asked questions

What is CVE-2021-44283?: CVE-2021-44283 is a high-severity vulnerability in Shieldstore Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2023-05-09.
How severe is CVE-2021-44283?: High severity. CVSS v3 base score is 7.5 out of 10.