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CVE-2025-21525 is a vulnerability in Oracle MySQL Server affecting the Server: DDL component. Affected versions include 8.0.39 and earlier, 8.4.2 and earlier, and 9.0.1 and earlier. The flaw is described as easily exploitable by a high-privileged attacker with network access via multiple protocols. Successful exploitation can compromise MySQL Server availability by triggering a hang or a frequently repeatable crash, resulting in complete denial of service. The available information indicates an availability-focused server-side flaw in DDL processing, but does not provide sufficient technical detail about the specific vulnerable function or root cause to describe the internal code path with confidence.
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No public exploit code observed for this vulnerability.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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