CVE-2026-5476: low-severity vulnerability in NASA cFS
NASA cFS cfe_tbl_passthru_codec.c CFE_TBL_ValidateCodecLoadSize integer overflow
Published · Updated
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8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2.1epss 0.2%
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:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
Affected products
NASA · cFSRelated CVEs — NASA cFS
In the same product, most dangerous first.
CVE-2026-5474MEDIUMNASA cFS CCSDS Packet Header to_lab_passthru_encode.c CFE_MSG_GetSize heap-based overflowEPSS 0.4%CVE-2026-82480MEDIUMNASA cFS cFE Software Bus cfe_sb_util.c CFE_SB_GetUserDataLength integer underflowEPSS 0.4%CVE-2026-82479MEDIUMNASA cFS SBN TCP sbn_tcp_if.c OS_read buffer overflowEPSS 0.4%CVE-2026-105164MEDIUMNASA cFS cfe_fs_api.c CFE_FS_ParseInputFileNameEx out-of-boundsEPSS 0.3%CVE-2026-5473LOWNASA cFS Pickle pickle.load deserializationEPSS 0.2%CVE-2026-5475MEDIUMNASA cFS CCSDS Header Size cfe_sb_priv.c CFE_SB_TransmitMsg memory corruptionEPSS 0.2%