TI-2019-04591 Aliases CVE-2019-6537 GHSA-8f2m-6jch-cp65

Stack-based buffer overflow in ICS-CERT WECON LeviStudioU

LOW 38CWE-121Published 2019-02-13 · Updated 2024-09-16

Key facts

Attack vector: Local
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

Multiple stack-based buffer overflow vulnerabilities in WECON LeviStudioU version 1.8.56 and prior may be exploited when parsing strings within project files. The process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage these vulnerabilities to execute code under the context of the current process. Mat Powell, Ziad Badawi, and Natnael Samson working with Trend Micro's Zero Day Initiative, reported these vulnerabilities to NCCIC.

Why it matters now

EPSS 0.01901 79th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
ICS-CERT	WECON LeviStudioU	LeviStudioU Versions 1.8.56 and prior	—	No fix listed	CNA

WECON LeviStudioU VendorICS-CERT Affected LeviStudioU Versions 1.8.56 and prior Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:we-con:levistudiou::::::::	up to 1.8.56	Vulnerable	WECON Technology Co., Ltd.

cpe:2.3:a:we-con:levistudiou:*:*:*:*:*:*:*:* Versions up to 1.8.56 Vulnerable ·WECON Technology Co., Ltd.

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-6537
2026-10-03 Alias added: GHSA-8f2m-6jch-cp65

References

Patch 1

https://ics-cert.us-cert.gov/advisories/ICSA-19-036-03

TI-2020-12772 Stack-based buffer overflow in LeviStudioU CVSS 3.1HIGH 7.8
TI-2021-05929 Stack-based buffer overflow in WECON LeviStudioU CVSS 3.1HIGH 7.8
TI-2021-05938 Heap-based buffer overflow in WECON LeviStudioU CVSS 3.1HIGH 7.8
TI-2018-07495 Heap-based buffer overflow in WECON Technology Co., Ltd. LeviStudioU CVSS 3.1HIGH 8.8
TI-2018-07491 Stack-based buffer overflow in WECON Technology Co., Ltd. LeviStudioU CVSS 3.1HIGH 8.8
TI-2018-07503 XML external entity injection in WECON Technology Co., Ltd. LeviStudioU CVSS 3.0HIGH 8.8

See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences