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TI-2025-15526 Aliases CVE-2025-21566GHSA-4x4h-rvfw-x95m

Incorrect permission assignment in Oracle MySQL Server

Priority LOW 32CWE-732Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 9.1.0 and prior. 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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00722 54th 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
Total

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 Serverup to 9.1.0—No fix listedCNA
  • MySQL Server VendorOracle Affected up to 9.1.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*9.0.0 – 9.1.0VulnerableOracle
  • cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* Versions 9.0.0 – 9.1.0 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 Server — oracle.com/security-alerts/cpujan2025.html

    30 records Highest priority Priority MEDIUM 1 MEDIUM, 29 LOW

    Other records, highest priority first

    • TI-2025-15481 Resource allocation without limits in Oracle MySQL ServerPriority MEDIUM 41
    • TI-2025-15482 Resource allocation without limits in Oracle MySQL ServerPriority LOW 31
    • TI-2025-15478 Resource allocation without limits in Oracle MySQL ClusterPriority LOW 31
    Show all 30 records → Advisory →

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 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-21566
  2. 2026-10-03 Alias added: GHSA-4x4h-rvfw-x95m

References

Advisory 1

  • TI-2021-02645 SM2 Decryption Buffer Overflow CVSS 3.1CRITICAL 9.8
  • TI-2022-01176 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
  • TI-2021-04451 XStream is vulnerable to an Arbitrary Code Execution attack CVSS 3.1CRITICAL 9.1
  • TI-2021-04444 XStream is vulnerable to an Arbitrary Code Execution attack CVSS 3.1CRITICAL 9.8
  • TI-2021-05762 Use after free in https://github.com/curl/curl CVSS 3.1HIGH 8.1
  • TI-2021-05807 Cleartext transmission of sensitive information in https://github.com/curl/curl CVSS 3.1HIGH 7.5
See all 347 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences