High severity · published Oct 14, 2026
CVE-2026-92155
F´: FileUplink Unknown Packet Type Assertion DoS
7.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FP
fprime · nasa
< 4.2.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-92155
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-92155
x_refsource_CONFIRM
https://github.com/nasa/fprime/security/advisories/GHSA-3534-8qg7-6cf5
x_refsource_MISC
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
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