CVE-2025-21522

mediumCVSS 6.5covered by 1 sourcefirst seen 2026-08-06

CSIRTS triage

vendor: Oracle product: MySQL ServerOtheraffected: 8.0.40 and prior, 8.4.3 and prior, 9.1.0 and prior

What: Parser component vulnerability allowing low-privileged network-based attackers to cause unspecified impact.
Who is affected: MySQL Server versions 8.0.40 and earlier, 8.4.3 and earlier, or 9.1.0 and earlier with network access.
Urgency: Moderate; easily exploitable by low-privileged attackers, not yet exploited.
Action: Upgrade MySQL Server to a version after 8.0.40, 8.4.3, or 9.1.0.

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Moderate exploitation risk1.0% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 61% of all EPSS-scored CVEs.

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