Vulnerability in Linux Linux_kernel

CVE-2026-39860

Nix is a package manager for Linux and other Unix systems. A bug in the fix for CVE-2024-27297 allowed for arbitrary overwrites of files writable by the Nix process orchestrating the builds (typically the Nix daemon running as root in mult…

EPSS: 0.002 (9.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-39860?
CVE-2026-39860 is a critical-severity vulnerability in Linux Linux_kernel, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 9.0/10. Published 2026-04-08.
How severe is CVE-2026-39860?
Critical severity. CVSS v3 base score is 9.0 out of 10.