CVE-2026-21991
Received Received - Intake
Arbitrary File Creation in DTrace dtprobed via USDT Injection

Publication date: 2026-03-16

Last updated on: 2026-04-07

Assigner: Oracle

Description
A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-03-16
Last Modified
2026-04-07
Generated
2026-06-16
AI Q&A
2026-03-17
EPSS Evaluated
2026-06-15
NVD
CVE-2026-21991
EUVD
EUVD-2026-12522
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
oracle linux 8
oracle linux 10
oracle linux 9
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability exists in a DTrace component called dtprobed. It allows an attacker to create arbitrary files by using specially crafted USDT (User-level Statically Defined Tracing) provider names.

Impact Analysis

The vulnerability can impact you by allowing an attacker with limited privileges to create arbitrary files on the system. While it does not affect confidentiality or integrity, it can cause availability issues.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

I don't know

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-21991. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart