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TI-2025-15478 Aliases CVE-2025-21518GHSA-mmr8-fpcp-hg5w

Resource allocation without limits in Oracle MySQL Cluster

Priority LOW 31CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 3 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-770.

Summary

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and 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 0.01066 64th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 3 fixed, 1 without a fix

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 Clusterup to 7.6.32; up to 8.0.40; up to 8.4.3; up to 9.1.0—No fix listedCNA
OracleMySQL Serverup to 8.0.40; up to 8.4.3; up to 9.1.0—No fix listedCNA
  • MySQL Cluster VendorOracle Affected up to 7.6.32; up to 8.0.40; up to 8.4.3; up to 9.1.0 Fixed in — No fix listed CNA
  • MySQL Server VendorOracle Affected up to 8.0.40; up to 8.4.3; up to 9.1.0 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*7.6.0 – 7.6.32; 8.0.0 – 8.0.40; 8.4.0 – 8.4.3; 9.0.0 – 9.1.0VulnerableOracle
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*8.0.0 – 8.0.40; 8.4.0 – 8.4.3; 9.0.0 – 9.1.0VulnerableOracle
  • cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:* Versions 7.6.0 – 7.6.32; 8.0.0 – 8.0.40; 8.4.0 – 8.4.3; 9.0.0 – 9.1.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* Versions 8.0.0 – 8.0.40; 8.4.0 – 8.4.3; 9.0.0 – 9.1.0 Vulnerable ·Oracle

Remediation

Red Hat 2 advisories

  • RHSA-2025:1673 Released 2025-02-19 · Red Hat rating Important
    mysql:8.0 security update
    • Red Hat Enterprise Linux AppStream (v. 8) mecab-0.996-2.module+el8.10.0+22857+7f331edd.aarch64::mysql:8.0, mecab-0.996-2.module+el8.10.0+22857+7f331edd.ppc64le::mysql:8.0, mecab-0.996-2.module+el8.10.0+22857+7f331edd.s390x::mysql:8.0 +44
  • RHSA-2025:1671 Released 2025-02-19 · Red Hat rating Important
    mysql security update
    • Red Hat CodeReady Linux Builder (v. 9) mysql-devel-8.0.41-2.el9_5, mysql-libs-8.0.41-2.el9_5, mysql-test-8.0.41-2.el9_5
    • Red Hat Enterprise Linux AppStream (v. 9) mysql-8.0.41-2.el9_5, mysql-common-8.0.41-2.el9_5, mysql-errmsg-8.0.41-2.el9_5 +1

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/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-2025-15526 Incorrect permission assignment in Oracle MySQL ServerPriority LOW 32
    • TI-2025-15482 Resource allocation without limits in Oracle MySQL ServerPriority LOW 31
    Show all 30 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat CodeReady Linux Builder (v. 9)Fixed RHSA-2025:1671
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2025:1673
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:1671
Not affected: 1 product
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-21518
  2. 2026-10-03 Alias added: GHSA-mmr8-fpcp-hg5w

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

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