Medium severity · published Apr 3, 2026
CVE-2026-5475
NASA cFS CCSDS Header Size cfe_sb_priv.c CFE_SB_TransmitMsg memory corruption
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
A vulnerability was determined in NASA cFS up to 7.0.0. This impacts the function CFE_SB_TransmitMsg of the file cfe_sb_priv.c of the component CCSDS Header Size Handler. Executing a manipulation can lead to memory corruption. The project was informed of the problem early through an issue report but has not responded yet.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Adjacent
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CF
cFS · NASA
7.0 · source: vendor
CF
Core Flight System · Nasa
through 7.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5475
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5475
Product
https://github.com/nasa/cFS/
Issue Tracking
https://github.com/nasa/cFS/issues/953
Third Party Advisory
https://vuldb.com/submit/781951
Third Party Advisory
https://vuldb.com/vuln/355079
Permissions Required
https://vuldb.com/vuln/355079/cti
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