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Improper access control in Oracle MySQL Server

Priority LOW 20CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Components Services). Supported versions that are affected are MySQL Server: 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 9.7.0-9.7.3 and 26.7.0-26.7.1. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00353 29th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OracleMySQL Server9.7.0-9.7.3; 26.7.0-26.7.1—No fix listedCNA
OracleMySQL Cluster9.7.0-9.7.3; 26.7.0-26.7.1—No fix listedCNA
  • MySQL Server VendorOracle Affected 9.7.0-9.7.3; 26.7.0-26.7.1 Fixed in — No fix listed CNA
  • MySQL Cluster VendorOracle Affected 9.7.0-9.7.3; 26.7.0-26.7.1 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*9.7.0 – 9.7.3; 26.7.0 – 26.7.1VulnerableOracle
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*9.7.0 – 9.7.3; 26.7.0 – 26.7.1VulnerableOracle
  • cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:* Versions 9.7.0 – 9.7.3; 26.7.0 – 26.7.1 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* Versions 9.7.0 – 9.7.3; 26.7.0 – 26.7.1 Vulnerable ·Oracle

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Oracle MySQL Cluster, MySQL Server — oracle.com/security-alerts/cpuoct2026.html

    81 records Highest priority Priority MEDIUM 1 MEDIUM, 80 LOW

    Other records, highest priority first

    • TI-2026-78081 Improper access control in MySQL Server Group Replication GCSPriority MEDIUM 40
    • TI-2026-77982 Denial of service in Oracle MySQL Server and MySQL Cluster client programsPriority LOW 39
    • TI-2026-78070 Improper access control in Oracle MySQL Server and MySQL ClusterPriority LOW 38

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 9
  • Red Hat Hardened Images

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-101752
  2. 2026-10-21 Alias added: GHSA-x87p-g426-pfq5
  3. 2026-10-22 Weakness changed · CISA ADP
  4. 2026-10-22 CISA SSVC decision points changed
  5. 2026-10-23 Affected versions changed · Red Hat
  6. 2026-10-23 CVSS score added · Red Hat

References

Advisory 1

  • TI-2021-14316 Out-of-bounds write in Oracle MySQL Cluster CVSS 3.1MEDIUM 6.3
  • TI-2021-05744 Uncontrolled resource consumption in NodeJS Node CVSS 3.1HIGH 7.5
  • TI-2022-05875 Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: General). CVSS 3.1MEDIUM 6.3
  • TI-2021-05792 Improper input validation in NodeJS Node CVSS 3.1CRITICAL 9.8
  • TI-2020-06694 Uncontrolled resource consumption in NodeJS Node CVSS 3.1HIGH 7.5
  • TI-2021-14324 Improper array index validation in Oracle MySQL Cluster CVSS 3.1MEDIUM 6.3
See all 122 →

Sources