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Standard
Vulnerability Identifier

CVE-2026-21939

2026-01-20
Severity Assessment
7.0
HIGH
CVSS v3.x Score
Clinical Analysis (Description)

Vulnerability in the SQLcl component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.0. Difficult to exploit vulnerability allows unauthenticated attacker with logon to the infrastructure where SQLcl executes to compromise SQLcl. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of SQLcl. CVSS 3.1 Base Score 7.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).

Vector Sequencing

Attack Parameters

Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Impact Consequences

Technical Impact

Unchanged
Scope
High
Confidentiality
High
Integrity
High
Availability
AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Classification

CWE-NVD-CWE-noinfo

Affected Population

Affected Configurations

Total: 4 detected entries

Software List Scrollable
or
database_server
Vendor: oracle • v23.5
or
database_server
Vendor: oracle • v23.4
or
database_server
Vendor: oracle • v23.8
or
database_server
Vendor: oracle • v23.9
Timeline

Time Line

PUBLICATION
20 Jan 2026
MODIFICATION
29 Jan 2026
FIRST PATCH
21 Apr 2026
Impact Statistics

Key Metrics

CVSS Score
7.0
HIGH
Products
4
Affected
Patches
2
Available
Remediation Protocol

Recommended Solution

No automatic solution found. Check vendor references.
Recommended Actions for Administrators

Immediate Action Plan

1. Inventory

Identify all affected systems in your infrastructure.

2. Assessment

Assess exposure and criticality for your organization.

3. Mitigation

Apply patches or available workarounds.

4. Verification

Test and confirm effectiveness of applied measures.