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CVE-2025-53042VulnerabilityPublished

CVE-2025-53042: Oracle MySQL Server · Easily exploitable vulnerability allows high privileged attacker with network access via multiple

Affects Oracle MySQL ServerSource CVE Database V5

0

Not known to be exploited · CVSS 4.9 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
4.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
Mavencom.oracle/mysql-serverpkg:maven/com.oracle/mysql-serverOther threatsAffected
  • =8.0.0
  • =8.4.0
  • =9.0.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

1. Monitor Oracle and MySQL official channels for patches addressing CVE-2025-53042 and apply them promptly once released. 2. Restrict network access to MySQL servers by implementing strict firewall rules and network segmentation, allowing only trusted hosts and services to connect. 3. Enforce the principle of least privilege by limiting administrative and high privilege accounts to essential personnel and services only. 4. Implement robust authentication and access controls, including multi-factor authentication for administrative access to MySQL servers. 5. Continuously monitor MySQL server logs and system performance metrics to detect unusual hangs, crashes, or resource exhaustion patterns indicative of exploitation attempts. 6. Conduct regular security audits and vulnerability assessments focusing on privilege management and network exposure of database servers. 7. Consider deploying intrusion detection/prevention systems (IDS/IPS) tuned to detect anomalous traffic patterns targeting MySQL protocols. 8. Prepare incident response plans that include procedures for database service restoration and forensic analysis in case of DoS attacks.

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.43, 8.4.0-8.4.6 and 9.0.0-9.4.0. 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

References

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