Unrated severityOSV Advisory· Published Jan 20, 2026· Updated Jan 21, 2026
CVE-2026-21964
CVE-2026-21964
Description
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. 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).
Affected products
24- Range: >=8.0.0 <=8.0.44, >=8.4.0 <=8.4.7, >=9.0.0 <=9.5.0
- osv-coords22 versionspkg:rpm/almalinux/mecabpkg:rpm/almalinux/mecab-develpkg:rpm/almalinux/mecab-ipadicpkg:rpm/almalinux/mecab-ipadic-EUCJPpkg:rpm/almalinux/mysqlpkg:rpm/almalinux/mysql8.4pkg:rpm/almalinux/mysql8.4-commonpkg:rpm/almalinux/mysql8.4-develpkg:rpm/almalinux/mysql8.4-errmsgpkg:rpm/almalinux/mysql8.4-libspkg:rpm/almalinux/mysql8.4-serverpkg:rpm/almalinux/mysql8.4-testpkg:rpm/almalinux/mysql8.4-test-datapkg:rpm/almalinux/mysql-commonpkg:rpm/almalinux/mysql-develpkg:rpm/almalinux/mysql-errmsgpkg:rpm/almalinux/mysql-libspkg:rpm/almalinux/mysql-serverpkg:rpm/almalinux/mysql-testpkg:rpm/almalinux/mysql-test-datapkg:rpm/almalinux/rapidjson-develpkg:rpm/almalinux/rapidjson-doc
< 0.996-2.module_el8.10.0+3965+b415b607+ 21 more
- (no CPE)range: < 0.996-2.module_el8.10.0+3965+b415b607
- (no CPE)range: < 0.996-2.module_el8.6.0+3340+d764b636
- (no CPE)range: < 2.7.0.20070801-17.module_el8.10.0+3965+b415b607
- (no CPE)range: < 2.7.0.20070801-17.module_el8.10.0+3965+b415b607
- (no CPE)range: < 8.0.45-1.el9_7
- (no CPE)range: < 8.4.8-1.el10_1
- (no CPE)range: < 8.4.8-1.el10_1
- (no CPE)range: < 8.4.8-1.el10_1
- (no CPE)range: < 8.4.8-1.el10_1
- (no CPE)range: < 8.4.8-1.el10_1
- (no CPE)range: < 8.4.8-1.el10_1
- (no CPE)range: < 8.4.8-1.el10_1
- (no CPE)range: < 8.4.8-1.el10_1
- (no CPE)range: < 8.0.45-1.el9_7
- (no CPE)range: < 8.0.45-1.el9_7
- (no CPE)range: < 8.0.45-1.el9_7
- (no CPE)range: < 8.0.45-1.el9_7
- (no CPE)range: < 8.0.45-1.el9_7
- (no CPE)range: < 8.0.45-1.el9_7
- (no CPE)range: < 8.4.8-1.module_el9.7.0+219+aca48cd3
- (no CPE)range: < 1.1.0-19.module_el9.6.0+152+8cbce00c
- (no CPE)range: < 1.1.0-19.module_el9.6.0+152+8cbce00c
Patches
Vulnerability mechanics
References
1- www.oracle.com/security-alerts/cpujan2026.htmlmitrevendor-advisory
News mentions
0No linked articles in our index yet.