CVE-2026-92151Public exploitNetwork attack vectorHinoki check available

Crash via undersized-packet assertion

Published Oct 14, 2026 · Updated Oct 14, 2026

Reachable assertion in F Prime before 4.2.0 allows remote attackers to crash CCSDS flight software via small telecommand frames. Svc::Ccsds::SpacePacketDeframer::dataIn_handler uses FW_ASSERT instead of rejecting buffers of six bytes or fewer after TcDeframer strips the header and trailer. Exploitation requires access to a CCSDS uplink deployment; the default Ref application uses a different deframer.

CVSS severity7.5
High
EPSS probability0.49%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Reachable assertion in F Prime before 4.2.0 allows remote attackers to crash CCSDS flight software via small telecommand frames. Svc::Ccsds::SpacePacketDeframer::dataIn_handler uses FW_ASSERT instead of rejecting buffers of six bytes or fewer after TcDeframer strips the header and trailer. Exploitation requires access to a CCSDS uplink deployment; the default Ref application uses a different deframer.

The record

CVE
CVE-2026-92151
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
NASA AMMOS
Product
F Prime
Classifications
CWE-617, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NASA AMMOS · F Primeversion=< 4.2.0

Published CVSS scores

7.5NASA F Prime upstream advisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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