Improper Verification of Cryptographic Signature Affecting u-boot package, versions [,2026.04-rc4)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-UBOOT-15843822
- published30 Mar 2026
- disclosed21 Mar 2026
- creditApple Security Engineering and Architecture
Introduced: 21 Mar 2026
CVE-2026-33243 (opens in a new tab)How to fix?
Upgrade u-boot to version 2026.04-rc4 or higher.
Overview
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the process of verifying FIT images due to the hashed-nodes property not being included in the hash calculation. An attacker can cause the bootloader to boot unauthorized images by modifying the hashed-nodes property after signing.