What is CVE-2019-25598?

CVE-2019-25598 is a medium-severity vulnerability in Heidisql Portable, classified under Out-of-bounds Write. CVSS score: 6.2/10. Published 2026-03-22.

How severe is CVE-2019-25598?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Buffer overflow in Heidisql Portable

CVE-2019-25598

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…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (4.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Heidisql Portable — versions 10.1.0.5464

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

ExploitDB-46749 (exploit)
Official Product Homepage (product)
Product Reference (product)
VulnCheck Advisory: HeidiSQL Portable 10.1.0.5464 Denial of Service via Buffer Overflow (third-party-advisory)

Frequently asked questions

What is CVE-2019-25598?: CVE-2019-25598 is a medium-severity vulnerability in Heidisql Portable, classified under Out-of-bounds Write. CVSS score: 6.2/10. Published 2026-03-22.
How severe is CVE-2019-25598?: Medium severity. CVSS v3 base score is 6.2 out of 10.