Read the docs
TI-2026-74397 Aliases CVE-2026-92159

Oversized telemetry overwrites channel slots in F´ TlmPacketizer

Priority MEDIUM 62CWE-130Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

F´ (F Prime) before 4.3.0 is affected. In Svc::TlmPacketizer, the TlmRecv_handler copies a telemetry value into a fixed channel slot without checking that it fits (CWE-805). An adjacent attacker without privileges or user interaction can send a telemetry update with an oversized value, which overwrites neighboring channel fields and causes corrupted packetized telemetry to be emitted.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.3.0, Svc::TlmPacketizer TlmRecv_handler fixed-slot copy TlmRecv_handler copies val.getSize bytes into entry.channelSize storage without confirming that the runtime value fits. When a telemetry update for a configured channel carries a serialized value larger than that channel fixed slot, the copy overwrites adjacent channel fields and causes corrupted packetized telemetry to be emitted. This issue is fixed in version 4.3.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00445 38th percentileScored 2026-11-07
Fix Fixed fprime (nasa): 4.3.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
nasafprimebefore 4.3.04.3.0Patch availableCNA
  • fprime Vendornasa Affected before 4.3.0 Fixed in 4.3.0 Patch available CNA

Remediation

Upgrade F´ (F Prime) to version 4.3.0, which fixes this issue. Versions before 4.3.0 remain affected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA fprime (nasa) Fixed in 4.3.0

Timeline

  1. 2026-10-15 Threatist record created from CVE-2026-92159
  2. 2026-10-16 CISA SSVC decision points changed

References

Other 5

  • TI-2025-21552 CryptoLib Has Heap Overflow in Crypto_TM_ProcessSecurity due to Unchecked Secondary Header Length CVSS 3.1CRITICAL 9.4
  • TI-2025-18986 The Memory Management Module of NASA cFS (Core Flight System) Aquila has insecure… CVSS 3.1CRITICAL 9.8
  • TI-2024-36754 A command injection vulnerability in the Command Dispatcher Service of NASA Fprime v3.4.3… CVSS 3.1CRITICAL 9.8
  • TI-2024-36752 A template injection vulnerability in the Dashboard of NASA Fprime v3.4.3 allows… CVSS 3.1CRITICAL 9.8
  • TI-2026-42833 AIT-DSN < 2.2.2 Missing Authentication via SLE API Routes CVSS 4.0CRITICAL 9.3
  • TI-2025-21662 Heap Buffer Overflow via Incomplete Length Check in `Crypto_TC_ApplySecurity` CVSS 4.0CRITICAL 9.3
See all 86 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences