Medium 5.3Published Jan 1, 2026

CVE-2025-48769Apache NuttX RTOS: fs/vfs/fs_rename: use after free

Updated under an hour ago (Oct 26, 2026, 9:20 AM ET)

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It affects Apache Software Foundation Apache NuttX RTOS and 1 other product. Add what you run to find out whether that includes you.

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Every CVE for Apache Software Foundation Apache NuttX RTOS

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: apache
NVD analysis: Analyzed
Record last updated: Jan 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Apache Software Foundation Apache NuttX RTOS apache_software_foundation:apache_nuttx_rtos (from the name)	from 7.20 before 12.11.0	CNA record
apache nuttx apache:nuttx	from 7.20 before 12.11.0	NVD

References

https://github.com/apache/nuttx/pull/16455patch, issue-tracking
https://lists.apache.org/thread/7m83v11ldfq7bvw72n9t5sccocczocjnvendor-advisory, mailing-list
http://www.openwall.com/lists/oss-security/2025/12/31/11mailing-list, third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.