CVE-2026-92155 F´: FileUplink Unknown Packet Type Assertion DoS
An attacker can cause a denial of service in F Prime applications by sending network packets with unknown file-packet types, triggering an assertion failure.
- 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-2026-92155?
CVE-2026-92155 is a high-severity denial of service vulnerability in nasa fprime, published on 14 Oct 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 4.2.0, Fw::FilePacket deserialization used by Svc::FileUplink is vulnerable because Header deserialization casts the byte to the Type enum without validating its range and FilePacket::fromSerialBuffer reaches a default FW_ASSERT. When a network file packet contains an unknown file-packet type byte, the assertion aborts or resets the default Ref application process, causing denial of service. This issue is fixed in version 4.2.0.
Weakness: CWE-617
Which versions are affected by CVE-2026-92155?
How do I fix CVE-2026-92155?
No fix has been published for CVE-2026-92155 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-92155 being exploited?
There is no known exploitation of CVE-2026-92155 in the wild and no public exploit code.
Sources
Also known as GHSA-3534-8qg7-6cf5.