CVE-2026-58302
CVSS Score
8.4
EPSS Score
0.0%
EPSS Percentile
0th
rtapi_app in linuxcnc-uspace in LinuxCNC before 2.9.9 allows privilege escalation. It is installed SUID root and loads shared library modules via dlopen() by using a user-supplied module name. Insufficient validation of the module name allows path traversal, enabling an unprivileged local user to load an arbitrary shared library. Because the process retains elevated privileges during module loading, this results in local privilege escalation to root.
| CWE | CWE-22 |
| Vendor | linuxcnc |
| Product | linuxcnc |
| Published | Jun 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
LinuxCNC / LinuxCNC
0 < 2.9.9
References
github.com: https://github.com/LinuxCNC/linuxcnc/commit/00d534c87464a3ed446656998aa02b8abc74b391 github.com: https://github.com/LinuxCNC/linuxcnc/commit/ea7cd579d39b586952a42e3da9a26d3e36e7a272 github.com: https://github.com/LinuxCNC/linuxcnc/compare/v2.9.8...v2.9.9 bugs.debian.org: https://bugs.debian.org/1140943