CVE-2026-101510

MEDIUM 4.4

Published 2026-10-20 · Last modified 2026-11-05

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).

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 4th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

4.4CVSS 3.1 · MEDIUM

ConfidentialityNone
IntegrityNone
AvailabilityHigh

What an attacker needs

⚠Access: Requires local access to the host
⚠Privileges: Requires an admin / high-privilege account
✓User interaction: No user interaction needed
✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

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Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot: 2026-11-15T07:22:42.427Z

Affected

Vendors Oracle Corporation

Products Oracle Net Services

Weakness (CWE)

CWE-400: Uncontrolled Resource Consumption

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References and research data (JSON)

All CVSS metrics

MEDIUM 4.4 v3.1 · CNA Primary
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
MEDIUM 4.4 v3.1 · NVD Secondary
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References

Advisories

https://www.oracle.com/security-alerts/cpuoct2026.html vendor-advisoryCVE record · oracle · Updated 2026-10-20T21:21:16.286Z
NVD · CVE-2026-101510 · Updated 2026-11-05T17:17:30.203
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-105924 ADVISORYEUVD · EUVD-2026-105924

Sources: NVD · CVE.org · EPSS