CVE-2026-22009: Easily exploitable vulnerability allows low 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. in Oracle Corporation MySQL Server
CVE-2026-22009 is a vulnerability in Oracle MySQL Server affecting versions 8. 0. 0 through 8. 0. 45, 8. 4. 0 through 8. 4. 8, and 9. 0.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-22009) exists in the Optimizer component of Oracle MySQL Server. It is exploitable remotely by an attacker with low privileges and network access through multiple protocols. The successful exploitation leads to denial of service by causing the MySQL Server to hang or crash repeatedly. Affected versions include MySQL Server 8.0.0 to 8.0.45, 8.4.0 to 8.4.8, and 9.0.0 to 9.6.0. The CVSS 3.1 base score is 6.5, reflecting a medium severity with an emphasis on availability impact. Oracle's April 2026 Critical Patch Update advisory references this vulnerability among many others but does not explicitly confirm patch availability for this specific issue.
Potential Impact
The impact of this vulnerability is a denial of service condition on affected MySQL Server instances. Attackers with low privileges and network access can cause the server to hang or crash repeatedly, disrupting database availability. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits have been reported in the wild at this time.
Mitigation Recommendations
Oracle has included this vulnerability in its April 2026 Critical Patch Update advisory. Customers are strongly advised to review the advisory at https://www.oracle.com/security-alerts/cpuapr2026.html and apply the relevant patches for MySQL Server versions 8.0.0-8.0.45, 8.4.0-8.4.8, and 9.0.0-9.6.0 as soon as possible. Patch status for this specific vulnerability is not explicitly confirmed in the advisory text provided; therefore, users should verify patch availability and installation instructions from Oracle's official advisory. No alternative mitigations or workarounds are mentioned.
CVE-2026-22009: Easily exploitable vulnerability allows low 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. in Oracle Corporation MySQL Server
Description
CVE-2026-22009 is a vulnerability in Oracle MySQL Server affecting versions 8. 0. 0 through 8. 0. 45, 8. 4. 0 through 8. 4. 8, and 9. 0.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-22009) exists in the Optimizer component of Oracle MySQL Server. It is exploitable remotely by an attacker with low privileges and network access through multiple protocols. The successful exploitation leads to denial of service by causing the MySQL Server to hang or crash repeatedly. Affected versions include MySQL Server 8.0.0 to 8.0.45, 8.4.0 to 8.4.8, and 9.0.0 to 9.6.0. The CVSS 3.1 base score is 6.5, reflecting a medium severity with an emphasis on availability impact. Oracle's April 2026 Critical Patch Update advisory references this vulnerability among many others but does not explicitly confirm patch availability for this specific issue.
Potential Impact
The impact of this vulnerability is a denial of service condition on affected MySQL Server instances. Attackers with low privileges and network access can cause the server to hang or crash repeatedly, disrupting database availability. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits have been reported in the wild at this time.
Mitigation Recommendations
Oracle has included this vulnerability in its April 2026 Critical Patch Update advisory. Customers are strongly advised to review the advisory at https://www.oracle.com/security-alerts/cpuapr2026.html and apply the relevant patches for MySQL Server versions 8.0.0-8.0.45, 8.4.0-8.4.8, and 9.0.0-9.6.0 as soon as possible. Patch status for this specific vulnerability is not explicitly confirmed in the advisory text provided; therefore, users should verify patch availability and installation instructions from Oracle's official advisory. No alternative mitigations or workarounds are mentioned.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-01-05T18:07:34.726Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.oracle.com/security-alerts/cpuapr2026.html","vendor":"Oracle"}]
Threat ID: 69e7e59e19fe3cd2cdf9f6df
Added to database: 4/21/2026, 9:01:18 PM
Last enriched: 4/29/2026, 11:31:44 AM
Last updated: 6/4/2026, 3:36:26 PM
Views: 61
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