Medium severity · published Apr 3, 2026
CVE-2026-5476
NASA cFS cfe_tbl_passthru_codec.c CFE_TBL_ValidateCodecLoadSize integer overflow
4.6
CVSS
0.2%
EPSS
No
On KEV
Description
A vulnerability was identified in NASA cFS up to 7.0.0 on 32-bit. Affected is the function CFE_TBL_ValidateCodecLoadSize of the file cfe/modules/tbl/fsw/src/cfe_tbl_passthru_codec.c. The manipulation leads to integer overflow. The complexity of an attack is rather high. The exploitability is told to be difficult. A fix is planned for the upcoming version milestone of the project.
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Adjacent
Complexity
High
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 11% 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-2026-5476
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5476
Product
https://github.com/nasa/cFS/
Issue Tracking
https://github.com/nasa/cFS/issues/954
Third Party Advisory
https://vuldb.com/submit/781971
Third Party Advisory
https://vuldb.com/vuln/355080
Permissions Required
https://vuldb.com/vuln/355080/cti
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