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
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 Optimizer component of Oracle MySQL Server and is exploitable remotely by an attacker with low privileges and network access. Successful exploitation leads to a denial of service by causing the server to hang or crash repeatedly. The affected versions span multiple major releases of MySQL Server. The CVSS 3.1 base score is 6.5, reflecting a medium severity with a focus on availability impact. Oracle has addressed this vulnerability in its April 2026 Critical Patch Update, which includes patches for MySQL Server among other products.
Potential Impact
The vulnerability allows an attacker with low privileges and network access to cause a denial of service condition on the MySQL Server by triggering hangs or crashes. This results in unavailability of the database service but does not compromise data confidentiality or integrity. There are no known exploits in the wild currently reported.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the April 2026 Critical Patch Update. Customers should promptly 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 to remediate this issue. No alternative mitigations or workarounds are specified. Staying current with Oracle's Critical Patch Updates is strongly recommended.
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
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 Optimizer component of Oracle MySQL Server and is exploitable remotely by an attacker with low privileges and network access. Successful exploitation leads to a denial of service by causing the server to hang or crash repeatedly. The affected versions span multiple major releases of MySQL Server. The CVSS 3.1 base score is 6.5, reflecting a medium severity with a focus on availability impact. Oracle has addressed this vulnerability in its April 2026 Critical Patch Update, which includes patches for MySQL Server among other products.
Potential Impact
The vulnerability allows an attacker with low privileges and network access to cause a denial of service condition on the MySQL Server by triggering hangs or crashes. This results in unavailability of the database service but does not compromise data confidentiality or integrity. There are no known exploits in the wild currently reported.
Mitigation Recommendations
Oracle has released patches for this vulnerability as part of the April 2026 Critical Patch Update. Customers should promptly 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 to remediate this issue. No alternative mitigations or workarounds are specified. Staying current with Oracle's Critical Patch Updates is strongly recommended.
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: 4/21/2026, 10:18:07 PM
Last updated: 4/22/2026, 7:34:00 AM
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.