# CVE-2017-3226

## Summary

- **CVE ID:** CVE-2017-3226
- **Severity:** UNKNOWN
- **CVSS Score:** 0
- **CWE:** CWE-329
- **Published:** Jul 24, 2018
- **Last Modified:** Mar 14, 2026

## Description

Das U-Boot is a device bootloader that can read its configuration from an AES encrypted file. Devices that make use of Das U-Boot's AES-CBC encryption feature using environment encryption (i.e., setting the configuration parameter CONFIG_ENV_AES=y) read environment variables from disk as the encrypted disk image is processed. An attacker with physical access to the device can manipulate the encrypted environment data to include a crafted two-byte sequence which triggers an error in environment variable parsing. This error condition is improperly handled by Das U-Boot, resulting in an immediate process termination with a debugging message.

## Affected Products

- Das — U-Boot (2017.09)

## References

- [CNA](http://www.securityfocus.com/bid/100675)
- [CNA](https://www.kb.cert.org/vuls/id/166743)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.04%
- **EPSS Percentile:** 12.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._