CVE-2026-41144 F´ (F Prime) has Integer Overflow in FileUplink
An integer overflow in F Prime allows attackers to bypass bounds checks and write arbitrary data to any file, leading to remote code execution on embedded targets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-41144?
CVE-2026-41144 is a vulnerability in nasa fprime, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-41144?
It affects 1 product.
Products include Nasa Fprime.
How do I fix CVE-2026-41144?
No fix has been published for CVE-2026-41144 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-41144 being exploited?
There is no known exploitation of CVE-2026-41144 in the wild and no public exploit code.
Other vulnerabilities in nasa fprime
Sources
Also known as GHSA-qmvv-rxh4-ccqh.