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TI-2025-15451 Aliases CVE-2025-21490GHSA-rh26-2566-h5m7

Resource allocation without limits in Oracle MySQL Server

Priority LOW 25CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 6 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: InnoDB). 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 high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/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 0.01274 70th percentileScored 2026-11-07
Fix Partial Red Hat: 8 advisoriesRed Hat: 6 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 Serverup to 8.0.40; up to 8.4.3; up to 9.1.0—No fix listedCNA
  • 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_server:*:*:*:*:*:*:*:*8.0.0 – 8.0.40; 8.4.0 – 8.4.3; 9.0.0 – 9.1.0VulnerableOracle
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
  • 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
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

Red Hat 8 advisories

  • RHSA-2026:6435 Released 2026-04-02 · Red Hat rating Moderate
    mariadb:10.11 security update
    • Red Hat Enterprise Linux AppStream (v. 8) Judy-1.0.5-18.module+el8.10.0+21221+7bee72c1.aarch64::mariadb:10.11, Judy-1.0.5-18.module+el8.10.0+21221+7bee72c1.ppc64le::mariadb:10.11, Judy-1.0.5-18.module+el8.10.0+21221+7bee72c1.s390x::mariadb:10.11 +47
  • RHSA-2026:0334 Released 2026-01-08 · Red Hat rating Important
    mariadb:10.11 security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) galera-26.4.20-1.module+el9.5.0+22578+dc54e53f.aarch64::mariadb:10.11, galera-26.4.20-1.module+el9.5.0+22578+dc54e53f.ppc64le::mariadb:10.11, galera-26.4.20-1.module+el9.5.0+22578+dc54e53f.s390x::mariadb:10.11 +47
  • RHSA-2026:0335 Released 2026-01-08 · Red Hat rating Important
    mariadb:10.11 security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) galera-26.4.16-1.module+el9.4.0+21205+b026b850.aarch64::mariadb:10.11, galera-26.4.16-1.module+el9.4.0+21205+b026b850.ppc64le::mariadb:10.11, galera-26.4.16-1.module+el9.4.0+21205+b026b850.s390x::mariadb:10.11 +47
Show 5 more Red Hat advisories
  • RHSA-2026:0247 Released 2026-01-07 · Red Hat rating Important
    mariadb:10.11 security update
    • Red Hat Enterprise Linux AppStream (v. 9) galera-26.4.20-1.module+el9.5.0+22578+dc54e53f.aarch64::mariadb:10.11, galera-26.4.20-1.module+el9.5.0+22578+dc54e53f.ppc64le::mariadb:10.11, galera-26.4.20-1.module+el9.5.0+22578+dc54e53f.s390x::mariadb:10.11 +47
  • RHSA-2025:19572 Released 2025-11-04 · Red Hat rating Moderate
    mariadb:10.5 security update
    • Red Hat Enterprise Linux AppStream (v. 8) Judy-1.0.5-18.module+el8.10.0+22630+cacda3f1.aarch64::mariadb:10.5, Judy-1.0.5-18.module+el8.10.0+22630+cacda3f1.ppc64le::mariadb:10.5, Judy-1.0.5-18.module+el8.10.0+22630+cacda3f1.s390x::mariadb:10.5 +47
  • RHSA-2025:19584 Released 2025-11-04 · Red Hat rating Moderate
    galera and mariadb security update
    • Red Hat Enterprise Linux AppStream (v. 9) galera-26.4.22-1.el9_6, mariadb-3:10.5.29-2.el9_6, mariadb-backup-3:10.5.29-2.el9_6 +9
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) mariadb-devel-3:10.5.29-2.el9_6, mariadb-embedded-devel-3:10.5.29-2.el9_6, mariadb-test-3:10.5.29-2.el9_6
  • 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 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, RHSA-2025:19572, RHSA-2026:6435
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:1671, RHSA-2025:19584, RHSA-2026:0247
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2026:0335
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:0334
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:19584
Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-21490
  2. 2026-10-03 Alias added: GHSA-rh26-2566-h5m7

References

Advisory 2

  • 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