Vulnerability · Published Oct 14, 2026 · Assigned by GitHub_M

CVE-2026-92155F´: FileUplink Unknown Packet Type Assertion DoS

High 7.5

In plain English

A high-severity security flaw in fprime from nasa. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 69.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
nasa	fprime	< 4.2.0

Weakness: CWE-617 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://github.com/nasa/fprime/security/advisories/GHSA-3534-8qg7-6cf5 x_refsource_CONFIRM
https://github.com/nasa/fprime/pull/4919 x_refsource_MISC
https://github.com/nasa/fprime/commit/cacdd555456bd83ab395b521d56c0330470ea798 x_refsource_MISC
https://github.com/nasa/fprime/releases/tag/v4.2.0 x_refsource_MISC