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CVE-2026-41144— F´ (F Prime) has Integer Overflow in FileUplink

Quick assessment

Affected
nasa fprime
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

fprime是NASA开源的一个飞行软件和嵌入式系统框架。 fprime 4.2.0之前版本存在输入验证错误漏洞，该漏洞源于边界检查使用U32加法导致溢出绕过，且未对目标文件路径进行清理，可能导致任意文件写入和远程代码执行。

EPSS 0.77% · P55
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I. Basic Information for CVE-2026-41144

Vulnerability Information
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Vulnerability Title
F´ (F Prime) has Integer Overflow in FileUplink
Source: CVE Program / CVE List V5
Vulnerability Description
F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to version 4.2.0, the bounds check byteOffset + dataSize > fileSize uses U32 addition that wraps around on overflow. An attacker-crafted DataPacket with byteOffset=0xFFFFFF9C and dataSize=100 overflows to 0, bypassing the check entirely. The subsequent file write proceeds at the original ~4GB offset. Additionally, Svc/FileUplink/File.cpp:20-31 performs no sanitization on the destination file path. Combined, these allow writing arbitrary data to any file at any offset. The impact is arbitrary file write leading to remote code execution on embedded targets. Note that this is a logic bug. ASAN does not detect it because all memory accesses are within valid buffers — the corruption occurs in file I/O. Version 4.2.0 contains a patch. No known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
fprime 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
fprime是NASA开源的一个飞行软件和嵌入式系统框架。 fprime 4.2.0之前版本存在输入验证错误漏洞，该漏洞源于边界检查使用U32加法导致溢出绕过，且未对目标文件路径进行清理，可能导致任意文件写入和远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nasa fprime < 4.2.0 -

II. Public POCs for CVE-2026-41144

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III. Intelligence Information for CVE-2026-41144

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Patches & Fixes for CVE-2026-41144 (1)

IV. Related Vulnerabilities

Same product: fprime
Same vendor: nasa
Same weakness: CWE-190

V. Comments for CVE-2026-41144

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