CVE-2026-92156

F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.3.0, Svc::EventManager loqQueue_internalInterfaceHandler packetization is vulnerable because EventManager accepts up to the framework LogBuffer maximum, but packet descriptor, event identifier, and time-tag metadata consume part of the larger ComBuffer and leave a smaller remaining budget for log arguments; serialization failure then reaches an assertion. When a deployment bridges events through GenericHub into EventManager and forwards a legal Fw::LogBuffer larger than EventManager remaining log-argument budget, under standard F Prime assertion handling, a legal bridged event payload aborts or resets the process, causing denial of service. This issue is fixed in version 4.3.0.

• https://github.com/nasa/fprime/commit/7eacd551aaf6d9a21e347ac2c8d827ca15ee5755
• https://github.com/nasa/fprime/pull/5633
• https://github.com/nasa/fprime/releases/tag/v4.3.0
• https://github.com/nasa/fprime/security/advisories/GHSA-6fxx-mgfv-55g7
• https://github.com/nasa/fprime/security/advisories/GHSA-6fxx-mgfv-55g7