CVE-2025-48769

Apache NuttX RTOS: fs/vfs/fs_rename: use after free

Published Jan 1, 2026 CVSS 3.1 · 5.3 Medium EPSS 1.6% KEV · Not listed
Description
Use After Free vulnerability was discovered in fs/vfs/fs_rename code of the Apache NuttX RTOS, that due recursive implementation and single buffer use by two different pointer variables allowed arbitrary user provided size buffer reallocation and write to the previously freed heap chunk, that in specific cases could cause unintended virtual filesystem rename/move operation results.

This issue affects Apache NuttX RTOS: from 7.20 before 12.11.0.

Users of virtual filesystem based services with write access especially when exposed over the network (i.e. FTP) are affected and recommended to upgrade to version 12.11.0 that fixes the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:apache:nuttx:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Type Values Removed Values Added
First Time appeared Apache
Apache nuttx
Vendors & Products Apache
Apache nuttx
Type Values Removed Values Added
Description Use After Free vulnerability was discovered in fs/vfs/fs_rename code of the Apache NuttX RTOS, that due recursive implementation and single buffer use by two different pointer variables allowed arbitrary user provided size buffer reallocation and write to the previously freed heap chunk, that in specific cases could cause unintended virtual filesystem rename/move operation results. This issue affects Apache NuttX RTOS: from 7.20 before 12.11.0. Users of virtual filesystem based services with write access especially when exposed over the network (i.e. FTP) are affected and recommended to upgrade to version 12.11.0 that fixes the issue.
Title Apache NuttX RTOS: fs/vfs/fs_rename: use after free
Weaknesses CWE-416
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Jan 5, 2026, 8:07 PM
Reserved
May 26, 2025, 1:39 AM
Status
Analyzed
Published
Jan 1, 2026, 5:15 PM
Modified
Oct 7, 2026, 11:10 AM