PT-2026-3679 · Oracle+1 · Mysql Server

CVE-2026-21929 · Published 2026-01-20 · Updated 2026-01-29

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Description A flaw exists in the MySQL Server component, specifically the Parser. A low-privileged attacker with network access can exploit this issue through multiple protocols to cause a denial-of-service condition, resulting in a hang or frequent crashes of the MySQL Server.

Recommendations Update to a version beyond 9.5.0. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2026-00701

CVE-2026-21929

Affected Products

Mysql Server

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21929.json · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-21929 · Vendor Advisory
• https://oracle.com/security-alerts/cpujan2026.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-21929 · Security Note
• https://bdu.fstec.ru/vul/2026-00701 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-21929 · Security Note
• https://ubuntu.com/security/CVE-2026-21929 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-21929 · Vendor Advisory
• https://t.me/cveNotify/150272 · Telegram Post
• https://twitter.com/CVEnew/status/2013783027793699118 · Twitter Post
• https://cybersecurity-help.cz/vdb/SB20260120188 · Note