MySQLDatabase / datastore · Oracle
CVE-2024-21166
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedVulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.36 and prior and 8.3.0 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all MySQL Server accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 5.9 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H).
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceVulnerability in MySQL Server's InnoDB storage engine allows a high-privileged attacker with network access to potentially modify or delete critical data, or cause denial of service through repeated crashes. The attack is difficult to exploit and requires high database privileges.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
MySQLDatabase / datastore
>= 8.0.0, <= 8.0.36= 8.3.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify MySQL Server installation and versionRun `mysql --version` or `mysqld --version` to obtain the exact MySQL Server version number installed in your environmentAffected if The version shown is between 8.0.0 and 8.0.36 inclusive, or is exactly 8.3.0
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Confirm InnoDB storage engine is in useConnect to MySQL and run `SHOW ENGINES;` to verify InnoDB is listed as available and supportedAffected if InnoDB is enabled and shown as SUPPORTED in the output (this is the default storage engine for MySQL 8.x)
Users are affected if they run MySQL Server versions 8.0.0 through 8.0.36 or version 8.3.0 with InnoDB enabled and network access configured, as the flaw resides specifically in the InnoDB storage engine component.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedApply Oracle Critical Patch Update April 2024 to upgrade MySQL to version 8.0.37+ or 8.4.0+ to address this vulnerability.
MySQL 8.0.37+ or MySQL 8.4.0+
- 1. Back up your MySQL database before performing any upgrade.
- 2. For MySQL 8.0.x installations: Upgrade to MySQL 8.0.37 or later.
- 3. For MySQL 8.3.0 installations: Upgrade to MySQL 8.4.0 or later.
- 4. Verify the upgrade by checking the MySQL version: SELECT VERSION();
- 5. Test critical applications to ensure compatibility with the new MySQL version.
- 6. Review MySQL 8.0.37 and 8.4.0 release notes for any additional security fixes included.
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in MySQL
Scoped from the published advisory
- Consultation3.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,648.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-21166 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-21166 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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