{"id":53722,"date":"2025-06-20T13:54:24","date_gmt":"2025-06-20T13:54:24","guid":{"rendered":""},"modified":"2025-07-08T23:21:29","modified_gmt":"2025-07-09T05:21:29","slug":"cve-2025-47869-buffer-overflow-vulnerability-in-apache-nuttx-rtos","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-47869-buffer-overflow-vulnerability-in-apache-nuttx-rtos\/","title":{"rendered":"CVE-2025-47869: Buffer Overflow Vulnerability in Apache NuttX RTOS<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The CVE-2025-47869 vulnerability is a severe flaw discovered in Apache NuttX RTOS’s xmlrpc application. This vulnerability arises from incorrect restriction of operations within a memory buffer of the application, which could potentially result in a buffer overflow. Users and organizations that have based their code on the affected example application are at risk and need to urgently address this vulnerability to prevent potential system<\/a> compromise or data leakage.
\nThis flaw affects Apache NuttX RTOS<\/a> releases from 6.22 to before 12.9.0. The severity of the issue<\/a>, coupled with the widespread use of Apache NuttX RTOS in numerous applications, makes this a critical cybersecurity concern that must be addressed promptly.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-47869
\nSeverity: Critical (9.8 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise or data leakage<\/a><\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Apache NuttX RTOS | 6.22 to before 12.9.0<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability lies in the improper<\/a> restriction of operations within the bounds of a memory buffer in the xmlrpc application of Apache NuttX RTOS. The application has a device stats structure that stores remotely<\/a> provided parameters. This structure has a hardcoded buffer size, creating a potential for buffer overflow<\/a> if excessively large data is inputted. The structure members buffer sizes were updated to a valid size of CONFIG_XMLRPC_STRINGSIZE+1, but this does not prevent buffer overflow<\/a> in all cases.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Below is a conceptual example of how this vulnerability might be exploited. In this example, the attacker sends a payload that exceeds the buffer limit via a POST request to the vulnerable<\/a> endpoint.<\/p>\n

POST \/xmlrpc\/device_stats HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ \"remotely_provided_parameter\": \"[A STRING LONGER THAN THE CONFIG_XMLRPC_STRINGSIZE+1]\" }<\/code><\/pre>\n
In this example, replacing “[A STRING LONGER THAN THE CONFIG_XMLRPC_STRINGSIZE+1] with a string that exceeds the buffer limit can cause a buffer overflow<\/a>, potentially leading to system compromise or data leakage.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The CVE-2025-47869 vulnerability is a severe flaw discovered in Apache NuttX RTOS’s xmlrpc application. This vulnerability arises from incorrect restriction of operations within a memory buffer of the application, which could potentially result in a buffer overflow. Users and organizations that have based their code on the affected example application are at risk and […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[103],"product":[],"attack_vector":[86],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-53722","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-apache","attack_vector-buffer-overflow"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t