CVE-2018-25231Public exploit

Application crash via oversized SQL log path

Published Mar 30, 2026 · Updated Mar 30, 2026

Denial of service in HeidiSQL 9.5.0.5196 allows local users to crash the application through the SQL log file path setting. The Preferences > Logging dialog passes a 5,000-character SQL log path into vulnerable buffer handling and crashes when the setting is saved. Local GUI access is required to paste and confirm the path; the demonstrated impact is an application crash, not code execution or data modification.

CVSS severity6.9
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in HeidiSQL 9.5.0.5196 allows local users to crash the application through the SQL log file path setting. The Preferences > Logging dialog passes a 5,000-character SQL log path into vulnerable buffer handling and crashes when the setting is saved. Local GUI access is required to paste and confirm the path; the demonstrated impact is an application crash, not code execution or data modification.

The record

CVE
CVE-2018-25231
Published
Mar 30, 2026
Updated
Mar 30, 2026
Vendor
HeidiSQL
Product
HeidiSQL
Classifications
CWE-98, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9.5.0.5196

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

HeidiSQL · HeidiSQLversion=9.5.0.5196

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.2VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.9VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-98Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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