CVE-2026-101510

Severity: medium (CVSS 4.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-20 · updated 2026-10-21

Description

Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows high privileged attacker having None privilege with logon to the infrastructure where Oracle Net Services executes to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Affected products

Oracle Corporation Oracle Net Services: from 19.3 through 19.32; from 21.3 through 21.23; from 23.4.0 through 23.26.3

References

https://www.oracle.com/security-alerts/cpuoct2026.html

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