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CVE-2026-21991

MEDIUM CVSS 3.1: 5.5 EPSS 0.01%
Updated Apr 07, 2026
Oracle
Parameter Value
CVSS 5.5 (MEDIUM)
Type CWE-22 (Path Traversal)
Vendor Oracle
Public PoC No

A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 3

Configuration From (including) Up to (excluding)
Oracle Linux
cpe:2.3:o:oracle:linux:8:-:*:*:*:*:*:*
Oracle Linux
cpe:2.3:o:oracle:linux:9:0:*:*:*:*:*:*
Oracle Linux
cpe:2.3:o:oracle:linux:10:0:*:*:*:*:*:*