CVE•Published 2026-01-01•Modified 2026-10-07•1 article on news•5 live references•NVD data

CVE-2025-48769Apache · Nuttx

Vulnerability data via NVD (ingested)

CVSS v3.1

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 25% of all CVEs

Weaknesses (CWE)

CWE-416Use After Free

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.

Timeline

Published 2026-01-01

Modified 2026-10-07

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2025-48769

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Apache Nuttx"

All exposed Apache Nuttx instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Nuttx"

HTTP body or banner mentions "Nuttx" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2025-48769