{"id":9612,"date":"2026-01-02T10:03:52","date_gmt":"2026-01-02T10:03:52","guid":{"rendered":"https:\/\/serisec.com\/index.php\/2026\/01\/02\/apache-nuttx-vulnerability-let-attackers-to-crash-systems\/"},"modified":"2026-01-02T10:03:52","modified_gmt":"2026-01-02T10:03:52","slug":"apache-nuttx-vulnerability-let-attackers-to-crash-systems","status":"publish","type":"post","link":"https:\/\/serisec.com\/index.php\/2026\/01\/02\/apache-nuttx-vulnerability-let-attackers-to-crash-systems\/","title":{"rendered":"Apache NuttX Vulnerability Let Attackers to Crash Systems"},"content":{"rendered":"

Apache NuttX Vulnerability Let Attackers to Crash Systems
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A newly disclosed use-after-free<\/a> vulnerability in Apache NuttX RTOS could allow attackers to cause system crashes and unintended filesystem operations, prompting urgent security warnings for users running network-exposed services.<\/p>\n

The flaw, tracked as CVE-2025-48769 and rated moderate in severity, affects a wide range of NuttX versions and was publicly disclosed on December 31, 2025.<\/p>\n

The vulnerability resides in the fs\/vfs\/fs_rename code of Apache NuttX, a mature real-time embedded operating system widely used in 8-bit to 64-bit microcontroller environments.<\/p>\n

The security issue stems from a recursive implementation that uses a single buffer<\/a> with two different pointer variables.<\/p>\n

Enabling arbitrary user-provided size buffer reallocation and write operations to previously freed heap chunks.<\/p>\n

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Field<\/th>\nDetails<\/th>\n<\/tr>\n<\/thead>\n
CVE ID<\/strong><\/td>\nCVE-2025-48769<\/td>\n<\/tr>\n
Vulnerability Type<\/strong><\/td>\nUse After Free (CWE-416)<\/td>\n<\/tr>\n
Affected Product<\/strong><\/td>\nApache NuttX RTOS<\/td>\n<\/tr>\n
Affected Component<\/strong><\/td>\nVirtual File System (VFS) \u2013 fs\/vfs<\/code>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

This use-after-free condition can trigger unintended virtual filesystem rename and move operations, potentially leading to system instability and crashes in specific scenarios.<\/p>\n

Users operating virtual filesystem-based services with write access face a particular risk, especially when these services are exposed over network protocols such as FTP.<\/a><\/p>\n

The vulnerability affects all Apache NuttX RTOS versions from 7.20 through 12.10.0. The Apache NuttX development team has released <\/a>version 12.11.0, which includes comprehensive fixes addressing the security flaw.<\/p>\n

Organizations running affected versions are strongly recommended to upgrade immediately to eliminate the risk of exploitation.<\/p>\n

The vulnerability was discovered and reported by Richard Jiayang Liu from the University of Illinois, who also contributed to developing the remediation code.<\/p>\n

The security fix underwent rigorous review by NuttX maintainers Xiang Xiao and Jiuzhu Dong before integration into the codebase.<\/p>\n

Tomek Cedro from Apache coordinated the disclosure process, ensuring timely notification and patch<\/a> availability.<\/p>\n

No active exploitation has been reported in the wild, though the moderate severity rating underscores the importance of prompt patching.<\/p>\n

Organizations unable to immediately upgrade should consider implementing network-level access controls to restrict write access to virtual filesystem services.<\/p>\n

In particular, FTP servers, until the security update is deployed across affected embedded systems and IoT devices<\/a>.<\/p>\n

Follow us on Google News<\/a>, LinkedIn<\/a>, and X<\/a> for daily cybersecurity updates. Contact us<\/a> to feature your stories.<\/strong><\/p>\n

The post Apache NuttX Vulnerability Let Attackers to Crash Systems<\/a> appeared first on Cyber Security News<\/a>.<\/p>\n<\/div>\n

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Apache NuttX Vulnerability Let Attackers to Crash Systems A newly disclosed use-after-free vulnerability in Apache NuttX RTOS could allow attackers to cause system crashes and unintended filesystem operations, prompting urgent security warnings for users running network-exposed services. The flaw, tracked as CVE-2025-48769 and rated moderate in severity, affects a wide range of NuttX versions and […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[803,129,63,131,648],"tags":[130],"class_list":["post-9612","post","type-post","status-publish","format-standard","hentry","category-apache","category-cyber-security","category-cyber-security-news","category-vulnerability","category-vulnerability-news","tag-cyber-security-news"],"_links":{"self":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/9612"}],"collection":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/comments?post=9612"}],"version-history":[{"count":0,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/9612\/revisions"}],"wp:attachment":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/media?parent=9612"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/categories?post=9612"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/tags?post=9612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}