Vulnerability · Published Oct 14, 2026 · Assigned by GitHub_M

CVE-2026-92151F´: SpacePacketDeframer Small Packet Assertion DoS

High 7.5

In plain English

A high-severity security flaw in fprime from nasa. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 54.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

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, Svc::Ccsds::SpacePacketDeframer dataIn_handler is vulnerable because the handler treats the minimum packet-length condition as FW_ASSERT rather than rejecting and returning the buffer. When a CCSDS telecommand frame leaves a payload of six bytes or fewer after TcDeframer removes its header and trailer, the assertion aborts or resets the flight-software 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-4rjh-jqvx-r8j5 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