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CVE-2024-21054: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.36 and prior and 8.3.0 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4

mediumCVSS 4.9CVE-2024-21054

CSIRTS triage

vendor: Oracleproduct: MySQL ServerOtheraffected: 8.0.36 and prior, 8.3.0 and prior
What
Optimizer component vulnerability allowing high-privileged network-based attackers to cause unspecified impact.
Who is affected
MySQL Server versions 8.0.36 and earlier, and 8.3.0 and earlier with high-privileged network access.
Urgency
Moderate; exploitable only by high-privileged attackers with network access, not yet exploited in the wild.
Action
Upgrade MySQL Server to a version after 8.0.36 or 8.3.0.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
medium — CVSS 4.9
Published
2026-08-06
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21054

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2024-21054coverage & exploitation statusNVD · CVE.org

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