Out-of-bounds Write Vulnerability in Apache NuttX Font Conversion Utility
CVE-2025-47868

9.8CRITICAL

Key Information:

Vendor

Apache
Status
Apache Nuttx Rtos: Tools/bdf-converter.
Vendor
CVE Published:
16 June 2025

What is CVE-2025-47868?

A vulnerability has been identified in the bdf-converter utility of Apache NuttX RTOS, which can lead to a heap-based buffer overflow. This issue arises when the tool processes external user data generated from external sources, potentially allowing an attacker to exploit the vulnerability. While the bdf-converter is an optional tool and not part of the core NuttX RTOS or its applications, users utilizing this utility should be aware of the risks. It’s highly recommended that users upgrade to version 12.9.0 or later to mitigate this vulnerability.

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Deploy the Patch

Affected Version(s)

Apache NuttX RTOS: tools/bdf-converter. 6.9 < 12.9.0

References

https://github.com/apache/nuttx/pull/16000
patch
https://lists.apache.org/thread/p4o2lcqgspx3ws1n2p4wmoqbq...
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Chánh Phạm <chanhphamviet@gmail.com>
Nathan Hartman <hartman.nathan@gmail.com>
Tomek CEDRO <tomek@cedro.info>
Alan Carvalho de Assis <acassis@gmail.com>
Alin Jerpelea <jerpelea@gmail.com>
Lee, Lup Yuen <luppy@appkaki.com>
Arnout Engelen <engelen@apache.org>
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