CVE-2025-21566
CSIRTS triage
- What
- An optimizer component vulnerability allows a low-privileged attacker with network access to compromise MySQL Server.
- Who is affected
- All MySQL 9.1.0 and prior deployments are affected, including those with low-privilege user accounts with network access.
- Urgency
- Medium priority with a CVSS of 6.5; easily exploitable by low-privilege attackers and requires immediate patching.
- Action
- Upgrade to a patched version after 9.1.0.
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Exploitation outlook
- Low exploitation risk0.69% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 50% of all EPSS-scored CVEs.
Advisory coverage (1)
External references
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