Buffer overflow in Apache Nuttx
CVE-2025-47869
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 structure that stored remotely provided parameters had hardcoded buffer size which could lead to buffer overflow. Structure members buffers were updated to valid size of CONFIG_XMLRPC_STRINGSIZE+1. This issue affects Apache NuttX RTOS users that may have used or base their code on example application as presented in releases from 6.22 before 12.9.0. Users of XMLRPC in Apache NuttX RTOS are advised to review their code for this pattern and update buffer sizes as presented in the version of the example in release 12.9.0.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001
Affected products
- Apache Nuttx
- Apache Software Foundation Nuttx Rtos — versions 6.22
Weakness classification (CWE)
References
- github.com/apache/nuttx-apps/pull/3027 (Third Party Advisory, patch, Issue Tracking)
- lists.apache.org/thread/306qcqyc3bpb2ozh015yxjo9kqs4jbvj (vendor-advisory, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-47869?
- CVE-2025-47869 is a critical-severity vulnerability in Apache Nuttx, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2025-06-16.
- How severe is CVE-2025-47869?
- Critical severity. CVSS v3 base score is 9.8 out of 10.