Medium severity · published Mar 16, 2026
CVE-2026-21991
A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OL
Oracle Linux · Oracle Corporation
8; 9; 10 · source: vendor
LI
Linux · Oracle
8; 9; 10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21991
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21991
Vendor Advisory
https://linux.oracle.com/cve/CVE-2026-21991.html
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