PT-2026-3712 · Oracle+1 · Mysql Server+1

CVE-2026-21965 · Published 2026-01-20 · Updated 2026-01-29

Positive Technologies (AI Summary)

CVSS v2.0

4.0

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions Oracle MySQL versions 9.0.0 through 9.5.0

Description An issue exists in the MySQL Server product of Oracle MySQL, specifically within the Server: Pluggable Auth component. This allows a high-privileged attacker with network access, through multiple protocols, to cause a partial denial of service (partial DOS) of the MySQL Server.

Recommendations Update MySQL Server versions prior to 9.5.1.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2026-00703

CVE-2026-21965

Affected Products

Mysql Server

Oracle Mysql

References · 12

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21965.json · Exploit
• https://cve.org/CVERecord?id=CVE-2026-21965 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-21965 · Vendor Advisory
• https://oracle.com/security-alerts/cpujan2026.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-21965 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00703 · Security Note
• https://ubuntu.com/security/CVE-2026-21965 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21965 · Security Note
• https://t.me/cveNotify/150279 · Telegram Post
• https://twitter.com/CVEnew/status/2013782994927132961 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2013864467721797723 · Twitter Post
• https://cybersecurity-help.cz/vdb/SB20260120188 · Note