Severity by source
AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:L confirmed by description requiring host-level logon; PR:N because no database or OS privileges needed beyond that logon; A:H for complete service crash; no confidentiality or integrity impact.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
2DescriptionCVE.org
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Replication). Supported versions that are affected are MySQL Server: 8.4.0-8.4.10, 9.7.0-9.7.1; MySQL Cluster: 8.0.0-8.0.47, 8.4.0-8.4.10 and 9.7.0-9.7.1. Easily exploitable vulnerability allows unauthenticated attacker with logon to the infrastructure where MySQL Server, MySQL Cluster executes to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 6.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
AnalysisAI
Local denial-of-service in Oracle MySQL Server and MySQL Cluster allows an unauthenticated attacker with OS-level logon access to the host infrastructure to crash or hang the database service via a flaw in the Replication component. Affected versions span MySQL Server 8.4.0-8.4.10 and 9.7.0-9.7.1, and MySQL Cluster 8.0.0-8.0.47, 8.4.0-8.4.10, and 9.7.0-9.7.1. Oracle classifies this as easily exploitable; no public exploit code or CISA KEV listing has been identified at time of analysis, and exploitation requires physical or logical host-level access rather than remote network reachability.
Technical ContextAI
The vulnerability resides in the Replication component of Oracle MySQL Server and MySQL Cluster - the subsystem responsible for binary log shipping, replica I/O and SQL threads, and replication topology management. The CVSS vector AV:L confirms the attack surface is local to the infrastructure (e.g., OS shell, container, or VM co-tenancy), not the MySQL network port, meaning the triggering input is delivered at the process or filesystem level rather than over the database wire protocol. The combination of PR:N and AV:L indicates that any OS-level principal with logon access - even an unprivileged local user - can interact with the replication subsystem in a way that produces an unhandled condition leading to a hang or repeated crash. No CWE was assigned by Oracle, so the precise root cause class (e.g., null pointer dereference, assertion failure, resource exhaustion) is unconfirmed from available data. CPE data covers Oracle MySQL Server and MySQL Cluster across the enumerated version ranges.
RemediationAI
Apply the patches published in the Oracle Critical Patch Update for July 2026, available at https://www.oracle.com/security-alerts/cpujul2026.html. Specific patched version numbers are not enumerated in the available intelligence; consult the Oracle advisory's risk matrix for the exact fix versions applicable to your MySQL Server or MySQL Cluster release stream. As a compensating control while patching is scheduled, restrict OS-level logon access to database hosts to only authorized database administrators - remove shell access for application service accounts and enforce least-privilege principles on the host OS. If MySQL replication is not in use, consider disabling or restricting the replication thread configuration to reduce attack surface, though side effects on HA and DR topologies must be evaluated before making that change. Container and cloud deployments should audit IAM roles and ensure no unprivileged identities have exec access to the MySQL container or VM.
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View allVendor StatusVendor
SUSE
Severity: Moderate| Product | Status |
|---|---|
| SUSE Liberty Linux 10 | Fixed |
| SUSE Liberty Linux 8 | Fixed |
| SUSE Liberty Linux 9 | Fixed |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-47079
GHSA-4xr7-8qqf-4gj7