CVE-2026-41144
F´ (F Prime) has Integer Overflow in FileUplink
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.
INFO
Published Date :
April 22, 2026, 12:16 a.m.
Last Modified :
May 21, 2026, 6:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | NONE | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update F Prime to version 4.2.0 or later.
- Ensure destination file paths are properly sanitized.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-41144.
| URL | Resource |
|---|---|
| https://github.com/nasa/fprime/commit/cacdd555456bd83ab395b521d56c0330470ea798 | Patch |
| https://github.com/nasa/fprime/security/advisories/GHSA-qmvv-rxh4-ccqh | Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-41144 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-41144
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-41144 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-41144 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 21, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:nasa:fprime:4.1.1:*:*:*:*:*:*:* Added Reference Type GitHub, Inc.: https://github.com/nasa/fprime/commit/cacdd555456bd83ab395b521d56c0330470ea798 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/nasa/fprime/security/advisories/GHSA-qmvv-rxh4-ccqh Types: Patch, Vendor Advisory -
New CVE Received by [email protected]
Apr. 22, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N Added CWE CWE-787 Added CWE CWE-190 Added Reference https://github.com/nasa/fprime/commit/cacdd555456bd83ab395b521d56c0330470ea798 Added Reference https://github.com/nasa/fprime/security/advisories/GHSA-qmvv-rxh4-ccqh