What is CVE-2019-25627?

CVE-2019-25627 is a high-severity vulnerability in Flexhex, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.4/10. Published 2026-03-24.

How severe is CVE-2019-25627?

High severity. CVSS v3 base score is 8.4 out of 10.

Arbitrary file upload in Flexhex

CVE-2019-25627

FlexHEX 2.71 contains a local buffer overflow vulnerability in the Stream Name field that allows local attackers to execute arbitrary code by triggering a structured exception handler (SEH) overflow. Attackers can craft a malicious text fi…

Vulnerability class: Unrestricted File Upload

EPSS: 0.000 (1.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Flexhex — versions 2.71

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

ExploitDB-46665 (exploit)
Official Product Homepage (product)
Product Reference (product)
VulnCheck Advisory: FlexHEX 2.71 Local Buffer Overflow via SEH Unicode (third-party-advisory)

Frequently asked questions

What is CVE-2019-25627?: CVE-2019-25627 is a high-severity vulnerability in Flexhex, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.4/10. Published 2026-03-24.
How severe is CVE-2019-25627?: High severity. CVSS v3 base score is 8.4 out of 10.