CVE-2019-25627

HIGH

8.4

Description

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 file with carefully aligned shellcode and SEH chain pointers, paste the contents into the Stream Name dialog, and execute arbitrary commands like calc.exe when the exception handler is triggered.

CVE Details

CVSS v3.1 Score8.4

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/24/2026

Last Modified3/24/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-434

References

http://www.flexhex.com(disclosure@vulncheck.com)

http://www.flexhex.com/download/flexhex_setup.exe(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/46665(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/flexhex-local-buffer-overflow-via-seh-unicode(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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