Origin validation error in U-Boot
Priority LOW 39CWE-346Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-346.
Summary
Das U-Boot before 2026.04 allows FIT (Flat Image Tree) signature verification bypass because hashed-nodes is omitted from a hash.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00212 11th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed U-Boot (denx): 2026.04
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| u-boot | U-Boot | before 2026.04 | 2026.04 | Patch available | CNA |
- U-Boot Vendoru-boot Affected before 2026.04 Fixed in 2026.04 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:* | 2013.07 to before 2026.04 | Vulnerable | u-boot |
| cpe:2.3:a:denx:u-boot:2026.04:rc1:*:*:*:*:*:* | 2026.04 rc1 | Vulnerable | u-boot |
| cpe:2.3:a:denx:u-boot:2026.04:rc2:*:*:*:*:*:* | 2026.04 rc2 | Vulnerable | u-boot |
| cpe:2.3:a:denx:u-boot:2026.04:rc3:*:*:*:*:*:* | 2026.04 rc3 | Vulnerable | u-boot |
- cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:* Versions 2013.07 to before 2026.04 Vulnerable ·u-boot
- cpe:2.3:a:denx:u-boot:2026.04:rc1:*:*:*:*:*:* Versions 2026.04 rc1 Vulnerable ·u-boot
- cpe:2.3:a:denx:u-boot:2026.04:rc2:*:*:*:*:*:* Versions 2026.04 rc2 Vulnerable ·u-boot
- cpe:2.3:a:denx:u-boot:2026.04:rc3:*:*:*:*:*:* Versions 2026.04 rc3 Vulnerable ·u-boot
Remediation
- Fix · CNA U-Boot (denx) Fixed in 2026.04
Timeline
- 2026-10-02 Threatist record created from CVE-2026-46728
- 2026-10-03 Alias added: GHSA-5cv5-vm4q-7wmx
References
More U-boot vulnerabilities
- TI-2022-02168 Unchecked Download size in Uboot CVSS 3.1HIGH 7.7
- TI-2025-28794 A lack of signature verification in the bootloader of DENX Software Engineering Das… CVSS 3.1MEDIUM 6.5
- TI-2020-06770 In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c… CVSS 3.1CRITICAL 9.8
- TI-2022-12898 nfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has… CVSS 3.1CRITICAL 9.8
- TI-2019-10569 An issue was discovered in Das U-Boot through 2019.07. CVSS 3.0CRITICAL 9.8
- TI-2019-10568 An issue was discovered in Das U-Boot through 2019.07. CVSS 3.0CRITICAL 9.8
Sources
- CVE-2026-46728 · CVE Program
- CVE-2026-46728 · NVD
- FIRST EPSS
- GHSA-5cv5-vm4q-7wmx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences