CVE-2025-21493

CSIRTS triage

What

A privilege-related vulnerability in MySQL Server security component allows a high-privileged attacker with network access to escalate privileges.

Who is affected

MySQL Server deployments running versions 8.4.3 and earlier or 9.1.0 and earlier.

Urgency

Medium severity; exploitation is difficult and requires high privileges, but patching should be prioritized for accessible instances.

Action

Upgrade MySQL Server to the latest patched version released by Oracle.

AI-assisted analysis generated from the source advisory — verify against the original.

Exploitation outlook

• Low exploitation risk0.82% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 55% of all EPSS-scored CVEs.

Advisory coverage (1)

• mediumCVE-2025-21493: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privil…msrc · 2026-08-06

External references

NVD record for CVE-2025-21493

CVE.org record

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