CVE-2019-25598

MEDIUM

HeidiSQL Portable 10.1.0.5464 Denial of Service via Buffer Overflow

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-25598. PoCs published by Victor Mondragón.

AI-analyzed exploit summary This PoC exploits a buffer overflow vulnerability in HeidiSQL Portable 10.1.0.5464 by generating a large string of 'A' characters (2000 bytes) and writing it to a file. When pasted into the login field, it triggers a denial of service (crash).

Description

HeidiSQL Portable 10.1.0.5464 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the password field. Attackers can paste a buffer overflow payload into the password input during Microsoft SQL Server login to trigger an application crash.

Exploits (1)

exploitdb WORKING POC
by Victor Mondragón · pythondoswindows
https://www.exploit-db.com/exploits/46749

This PoC exploits a buffer overflow vulnerability in HeidiSQL Portable 10.1.0.5464 by generating a large string of 'A' characters (2000 bytes) and writing it to a file. When pasted into the login field, it triggers a denial of service (crash).

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: HeidiSQL Portable 10.1.0.5464
No auth needed
Prerequisites: Python to generate the payload file · HeidiSQL Portable 10.1.0.5464 installed · User interaction to paste the payload into the login field
devstral-2 · analyzed Mar 22, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit exploit
ExploitDB-46749
https://www.exploit-db.com/exploits/46749
Product product
Official Product Homepage
https://www.heidisql.com/
Third Party Advisory third-party-advisory
VulnCheck Advisory: HeidiSQL Portable 10.1.0.5464 Denial of Service via Buffer Overflow
https://www.vulncheck.com/advisories/heidisql-portable-denial-of-service-via-buffer-overflow

Scores

CVSS v3 6.2
EPSS 0.0014
EPSS Percentile 3.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-787
Status published
Products (1)
Heidisql/HeidiSQL Portable 10.1.0.5464
Published Mar 22, 2026
Tracked Since Mar 22, 2026