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Vulnerabilities ›

CVE-2019-25627

High

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.

CWE-434 — Weakness Type

                    Published: Mar 24, 2026                      ·  Modified: Mar 30, 2026                      ·  Source: NVD                

CVSS v3

8.4

🔗 NVD Official

📄 Description (English)

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.

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Queued for AI Analysis

This CVE will be auto-analyzed on the next cron run.

🔗 References & Sources 4

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

📊 CVSS Score

8.4

/ 10.0 — High

📊 CVSS Vector

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

Attack VectorL — Low / Local

Attack ComplexityL — Low / Local

Privileges RequiredN — None / Network

User InteractionN — None / Network

ScopeU — Unchanged

ConfidentialityH — High

IntegrityH — High

AvailabilityH — High

📋 Quick Facts

Severity High

CVSS Score8.4

CWECWE-434

Exploit No

Patch ✗ No

Published 2026-03-24

Source Feed nvd

🏷️ Tags

CWE-434

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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