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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.

PUBLISHED Reserved 2026-03-22 | Published 2026-03-22 | Updated 2026-03-23 | Assigner VulnCheck




MEDIUM: 6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
MEDIUM: 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Out-of-bounds Write

Product status

10.1.0.5464
affected

Credits

Victor Mondragón finder

References

www.exploit-db.com/exploits/46749 (ExploitDB-46749) exploit

www.heidisql.com/ (Official Product Homepage) product

www.heidisql.com/...s/releases/HeidiSQL_10.1_64_Portable.zip (Product Reference) product

www.vulncheck.com/...e-denial-of-service-via-buffer-overflow (VulnCheck Advisory: HeidiSQL Portable 10.1.0.5464 Denial of Service via Buffer Overflow) third-party-advisory

cve.org (CVE-2019-25598)

nvd.nist.gov (CVE-2019-25598)

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