CVE-2026-22017: 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
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 and 9.0.0-9.6.0. 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. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
AI Analysis
Technical Summary
This vulnerability exists in the Server: Optimizer component of Oracle MySQL Server. It is easily exploitable by an attacker with low privileges and network access, enabling them to cause a hang or repeated crash of the MySQL Server, resulting in a denial of service. The CVSS 3.1 base score is 6.5, reflecting a medium severity with an impact limited to availability. Affected versions include 8.0.0-8.0.45, 8.4.0-8.4.8, and 9.0.0-9.6.0. Oracle's April 2026 Critical Patch Update addresses this vulnerability among others, providing official fixes. The vendor strongly recommends applying these patches without delay to prevent exploitation.
Potential Impact
Successful exploitation of this vulnerability results in denial of service by causing the MySQL Server to hang or crash repeatedly. There is no impact on confidentiality or integrity of data. The attack requires network access and low privileges, making it relatively easy to exploit. No known active exploits have been reported. The impact is limited to availability disruption of the MySQL Server.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the April 2026 Critical Patch Update. Users should apply the relevant patches for their MySQL Server versions (8.0.0-8.0.45, 8.4.0-8.4.8, 9.0.0-9.6.0) promptly to mitigate the risk. Oracle strongly recommends staying on actively supported versions and applying Critical Patch Updates without delay. Patch status is confirmed by the vendor advisory at https://www.oracle.com/security-alerts/cpuapr2026.html.
CVE-2026-22017: 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
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 and 9.0.0-9.6.0. 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. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability exists in the Server: Optimizer component of Oracle MySQL Server. It is easily exploitable by an attacker with low privileges and network access, enabling them to cause a hang or repeated crash of the MySQL Server, resulting in a denial of service. The CVSS 3.1 base score is 6.5, reflecting a medium severity with an impact limited to availability. Affected versions include 8.0.0-8.0.45, 8.4.0-8.4.8, and 9.0.0-9.6.0. Oracle's April 2026 Critical Patch Update addresses this vulnerability among others, providing official fixes. The vendor strongly recommends applying these patches without delay to prevent exploitation.
Potential Impact
Successful exploitation of this vulnerability results in denial of service by causing the MySQL Server to hang or crash repeatedly. There is no impact on confidentiality or integrity of data. The attack requires network access and low privileges, making it relatively easy to exploit. No known active exploits have been reported. The impact is limited to availability disruption of the MySQL Server.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the April 2026 Critical Patch Update. Users should apply the relevant patches for their MySQL Server versions (8.0.0-8.0.45, 8.4.0-8.4.8, 9.0.0-9.6.0) promptly to mitigate the risk. Oracle strongly recommends staying on actively supported versions and applying Critical Patch Updates without delay. Patch status is confirmed by the vendor advisory at https://www.oracle.com/security-alerts/cpuapr2026.html.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- oracle
- Date Reserved
- 2026-01-05T18:07:34.728Z
- 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: 69e7e59e19fe3cd2cdf9f6f5
Added to database: 4/21/2026, 9:01:18 PM
Last enriched: 4/21/2026, 10:17:19 PM
Last updated: 4/22/2026, 6:07:14 AM
Views: 4
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