CVE-2018-25231: HeidiSQL 9.5.0.5196 contains a denial of service vulnerability that allows local attackers to crash the applic

Q: How do I fix CVE-2018-25231?

heidisql: upgrade to newer than 9.5.0.5196. Exact commands for each OS are on this page.

Q: Is CVE-2018-25231 being exploited?

CVE-2018-25231 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-25231 affect?

CVE-2018-25231 affects heidisql. Severity is medium (CVSS 6.2). HeidiSQL 9.5.0.5196 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long file path in the logging preferences. Attackers can input a buffer-overflow payload through

Q: How urgent is CVE-2018-25231?

Priority 29/100. Public exploit reference

Routine

MEDIUM 6.2UPGRADE

CVE-2018-25231 is a medium-severity flaw (CVSS 6.2) affecting heidisql. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

HeidiSQL 9.5.0.5196 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long file path in the logging preferences. Attackers can input a buffer-overflow payload through the SQL log file path field in Preferences > Logging to trigger an application crash.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.2 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-98
Published	2026-03-30
Last modified	2026-10-07

Publisher (CNA): VulnCheck · Vendor: heidisql

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-30 12:16 UTCPublished CVE record published
2026-10-07 08:10 UTCUpdated Record last modified

heidisql heidisql UPGRADE

Affected: <= 9.5.0.5196

Fixed in: newer than 9.5.0.5196

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy heidisql || rpm -q heidisql || heidisql --version

2. UPGRADE to newer than 9.5.0.5196 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade heidisql

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade heidisql

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-25231?

heidisql: upgrade to newer than 9.5.0.5196. Exact commands for each OS are on this page.

Is CVE-2018-25231 being exploited?

CVE-2018-25231 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-25231 affect?

CVE-2018-25231 affects heidisql. Severity is medium (CVSS 6.2). HeidiSQL 9.5.0.5196 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long file path in the logging preferences. Attackers can input a buffer-overflow payload through

How urgent is CVE-2018-25231?

Priority 29/100. Public exploit reference

References

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