PT-2026-21820 · Freebsd · Freebsd

Published 2025-07-29 · Updated 2026-03-09 · CVE-2025-15576

Positive Technologies (AI Summary)

CVSS v2.0

10

High

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions FreeBSD (affected versions not specified)

Description A critical flaw exists in FreeBSD that allows a jailed process to escape its confinement. Successful exploitation of this issue can lead to full filesystem access, effectively breaking the chroot isolation. This can result in a system crash and exposure of host filesystems.

Recommendations Apply the patch provided via FreeBSD-SA-26:04.jail.

Fix

Improper Privilege Management

Weakness Enumeration

CWE-269

CWE-488

CWE-790

Related Identifiers

BDU:2026-03238

CVE-2025-15576

Affected Products

Freebsd

References · 15

• https://security.freebsd.org/advisories/FreeBSD-SA-26:04.jail.asc · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-03238 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-15576 · Security Note
• https://twitter.com/VulmonFeeds/status/2031044008097521810 · Twitter Post
• https://github.com/advisories/GHSA-42fj-xxgc-m676 · Note
• https://twitter.com/nanovms/status/2026415136467202361 · Twitter Post
• https://twitter.com/CVEnew/status/2031122537241853961 · Twitter Post
• https://twitter.com/threatcluster/status/2027345575390187902 · Twitter Post
• https://t.me/CVEtracker/46899 · Telegram Post
• https://twitter.com/the_yellow_fall/status/2026929921537224897 · Twitter Post
• https://twitter.com/nanovms/status/2028133744948007408 · Twitter Post
• https://freebsd.org/security/advisories/FreeBSD-SA-26:04.jail.asc · Note
• https://twitter.com/CCBalert/status/2027057842474099110 · Twitter Post
• https://twitter.com/xbeaudouin/status/2028285008071557174 · Twitter Post
• https://tenable.com/cve/CVE-2025-15576 · Note