# CVE-2026-82480

## Summary

- **CVE ID:** CVE-2026-82480
- **Severity:** MEDIUM
- **CVSS Score:** 7.4 (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)
- **CWE:** CWE-191, CWE-189
- **Published:** Aug 30, 2026
- **Last Modified:** Aug 31, 2026

## Description

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.

## Affected Products

- NASA — cFS (7.0.0)
- NASA — cFS (7.0.1)

## References

- [CNA](https://vuldb.com/vuln/397030)
- [CNA](https://vuldb.com/vuln/397030/cti)
- [CNA](https://vuldb.com/cve/CVE-2026-82480)
- [CNA](https://vuldb.com/submit/888018)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.22%
- **EPSS Percentile:** 13.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._