Medium severity · published Oct 14, 2026
CVE-2026-92160
F´: SendPartial Integer Overflow Leading to Assertion DoS
6.5
CVSS
0.3%
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 4.3.0, Svc::FileDownlink SendPartial range validation is vulnerable because the wrapping sum bypasses file-range validation, becomes m_endOffset, and leaves m_byteOffset greater than the wrapped end offset. When an existing source file is larger than the supplied startOffset and a caller able to issue SendPartial supplies a length whose U32 sum with that offset wraps, the first data-packet send reaches FW_ASSERT and aborts or resets the process, causing denial of service. This issue is fixed in version 4.3.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FP
fprime · nasa
< 4.3.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-92160
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-92160
x_refsource_CONFIRM
https://github.com/nasa/fprime/security/advisories/GHSA-8r3j-ghrh-55mw
x_refsource_MISC
https://github.com/nasa/fprime/pull/5565
x_refsource_MISC
https://github.com/nasa/fprime/commit/33fe2a4fe3fd5ff1b14985669fbad09f070e9914
x_refsource_MISC
https://github.com/nasa/fprime/commit/95eeb5cfb44e5609eff0887f0e11e640cdacef6b
x_refsource_MISC
https://github.com/nasa/fprime/releases/tag/v4.3.0
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