Medium [CVE-2026-71084] Denial of Service via unauthenticated local access
This medium-severity Red Hat Linux advisory covers CVE-2026-71084 affecting Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat package: mysql-connector-odbc.
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Summary
Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/ODBC). The supported version that is affected is 26.7.0.
Easily exploitable vulnerability allows unauthenticated attacker with logon to the infrastructure where MySQL Connectors executes to compromise MySQL Connectors.
Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Connectors and unauthorized read access to a subset of MySQL Connectors accessible data. CVSS 3.1 Base Score 6.8 (Confidentiality and Availability impacts).
CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H). This can lead to a complete denial of service (DoS) by causing the component to crash repeatedly.
This Moderate severity flaw in `mysql-connector-odbc` allows an unauthenticated attacker with local logon access to the system to cause a complete denial of service and gain unauthorized read access to a subset of data.
The local attack vector limits the immediate remote exploitability, but successful exploitation can significantly impact system availability and data confidentiality. Red Hat severity: Moderate — CVSS 6.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H).
Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
- 26.7.0
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
Mitigation checklist
- Since this vulnerability requires local logon access, ensure that only trusted users have interactive access to systems running `mysql-connector-odbc`. If the `mysql-connector-odbc` package is not actively used, consider removing it to eliminate the attack surface.
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
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