Apache Nuttx vulnerabilities

9 CVEs affecting Apache Nuttx, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2025-48769, published 2026-01-01.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2021-26461, published 2021-06-21. Critical severity, CVSS 9.8. EPSS: 5% chance of exploitation in the next 30 days. Apache Nuttx Versions prior to 10.1.0 are vulnerable to integer wrap-around in functions malloc, realloc and memalign. This improper memory assignment can lead to arbitrary memory allocation,…
CVE-2020-17528, published 2020-12-09. Critical severity, CVSS 9.1. EPSS: 3.2% chance of exploitation in the next 30 days. Out-of-bounds Write vulnerability in TCP stack of Apache NuttX (incubating) versions up to and including 9.1.0 and 10.0.0 allows attacker to corrupt memory by supplying arbitrary urgent data pointer…
CVE-2020-17529, published 2020-12-09. Critical severity, CVSS 9.8. EPSS: 2.9% chance of exploitation in the next 30 days. Out-of-bounds Write vulnerability in TCP Stack of Apache NuttX (incubating) versions up to and including 9.1.0 and 10.0.0 allows attacker to corrupt memory by supplying and invalid fragmentation…
CVE-2020-1939, published 2020-05-12. Critical severity, CVSS 9.8. EPSS: 2.6% chance of exploitation in the next 30 days. The Apache NuttX (Incubating) project provides an optional separate "apps" repository which contains various optional components and example programs. One of these, ftpd, had a NULL pointer…
CVE-2025-48769, published 2026-01-01. High severity, CVSS 8.1. EPSS: 1.6% chance of exploitation in the next 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…
CVE-2025-35003, published 2025-05-26. Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days. Improper Restriction of Operations within the Bounds of a Memory Buffer and Stack-based Buffer Overflow vulnerabilities were discovered in Apache NuttX RTOS Bluetooth Stack (HCI and UART components)…
CVE-2025-48768, published 2026-01-01. Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days. Release of Invalid Pointer or Reference vulnerability was discovered in fs/inode/fs_inoderemove code of the Apache NuttX RTOS that allowed root filesystem inode removal leading to a debug assert…
CVE-2025-47869, published 2025-06-16. Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days. Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability was discovered in Apache NuttX RTOS apps/exapmles/xmlrpc application. In this example application device stats…
CVE-2025-47868, published 2025-06-16. Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days. Out-of-bounds Write resulting in possible Heap-based Buffer Overflow vulnerability was discovered in tools/bdf-converter font conversion utility that is part of Apache NuttX RTOS repository. This…