CVE-2026-21991 json
A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names.
published 2026-03-16 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-12522
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
A DTrace component, dtprobed, allows arbitrary file creation through crafted USDT provider names.
Patch / fix
- dtrace Debian 14 2.0.6-1
debian advisories DEBIAN-CVE-2026-21991
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Oracle Corporation Oracle Linux
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
linux.oracle.com
/cve/CVE-2026-21991.html
vendor-advisory
Sources
- CVE List CVE-2026-21991
- NVD CVE-2026-21991
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.