What is CVE-2021-23157?

CVE-2021-23157 is a high-severity vulnerability in We-Con Levistudiou, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2022-01-14.

How severe is CVE-2021-23157?

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

Buffer overflow in We-Con Levistudiou

CVE-2021-23157

WECON LeviStudioU Versions 2019-09-21 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code.

Vulnerability class: Buffer Overflow

Published 2022-01-14 · 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: 0.076 (94.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.076 · newest: 0.076 · change: 0.000

Affected products

We-Con Levistudiou
Wecon Levistudiou — versions All

Weakness classification (CWE)

References

www.cisa.gov/uscert/ics/advisories/icsa-21-355-03 (US Government Resource, Third Party Advisory)
www.zerodayinitiative.com/advisories/ZDI-22-130/ (VDB Entry, Third Party Advisory)
www.zerodayinitiative.com/advisories/ZDI-22-132/ (VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2021-23157?: CVE-2021-23157 is a high-severity vulnerability in We-Con Levistudiou, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2022-01-14.
How severe is CVE-2021-23157?: High severity. CVSS v3 base score is 7.8 out of 10.