Dashboard / CVE-2026-47040

CVE-2026-47040

CRITICAL
INFO Priority: 0.04 BB Relevance: 78/100
Published: 2026-07-21 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: None
A: High

Description

Vulnerability in the Oracle Net Services component of Oracle Database Server. Supported versions that are affected are 19.3-19.31, 21.3-21.22 and 23.4.0-23.26.2. Easily exploitable vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Oracle Net Services. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Net Services accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Net Services. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
oracle database_server 19.3 – 19.31
oracle database_server 21.3 – 21.22
oracle database_server 23.4 – 23.26.2

References & Advisories (1)

Bug Bounty Relevance

78 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS — Exploitation Probability

0.49%
Raw Score 0.004940
Percentile 42.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00494
2026-10-28
0.00494

Intelligence Sources

nvd ref →

External Links