CVE-2026-82480
A security flaw has been discovered in NASA cFS up to 7.0.1. The affected element is the function CFE_SB_GetUserDataLength of the file src/cFS/cfe/modules/sb/fsw/src/cfe_sb_util.c of the component cFE Software Bus. Performing a manipulation of the argument TotalMsgSize/HdrSize results in integer underflow. It is possible to initiate the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 7.4
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X
- EPSS probability
- 0.22%
- CWE
- CWE-191, CWE-189
- Published
- 2026-08-30
- Last modified
- 2026-08-31
Affected products
- NASA cFS
- NASA cFS
Weakness type
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