Is CVE-2025-15576 actively exploited?

No active exploitation of CVE-2025-15576 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-15576 be exploited remotely?

No. CVE-2025-15576 requires local access to exploit.

What is the CVSS score of CVE-2025-15576?

CVE-2025-15576 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2025-15576

CWE-269Published: March 9, 2026· Updated: Mar 10, 2026

7.5

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:3.9th

Official Description

If two sibling jails are restricted to separate filesystem trees, which is to say that neither of the two jail root directories is an ancestor of the other, jailed processes may nonetheless be able to access a shared directory via a nullfs mount, if the administrator has configured one.

In this case, cooperating processes in the two jails may establish a connection using a unix domain socket and exchange directory descriptors with each other.

When performing a filesystem name lookup, at each step of the lookup, the kernel checks whether the lookup would descend below the jail root of the current process. If the jail root directory is not encountered, the lookup continues.

In a configuration where processes in two different jails are able to exchange file descriptors using a unix domain socket, it is possible for a jailed process to receive a directory for a descriptor that is below that process' jail root. This enables full filesystem access for a jailed process, breaking the chroot.

Note that the system administrator is still responsible for ensuring that an unprivileged user on the jail host is not able to pass directory descriptors to a jailed process, even in a patched kernel.

NVD Source

Technical Analysis

CVE-2025-15576 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 7.5.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.