EUVD-2026-62479
GHSA-46j4-pvjg-4r6r
Severity by source
AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Physical write access to boot media is the sole prerequisite (AV:P, AC:L); no OS credential or authentication is required to write flash (PR:N); successful exploitation yields full device firmware compromise (C:H/I:H/A:H).
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
The Ingenic T41, and probably also T32, T40, and A1 SoC boot ROMs parse and execute an attacker-controlled init table from the SPL header before checking the secure boot state and before invoking signature verification. The init table parser supports full-address 32-bit write operations, allowing modification of SRAM-resident secure boot state prior to the verification decision. An attacker with physical write access to boot media can inject an init-table entry that disables the secure boot check, causing the ROM to accept unsigned or modified first-stage boot code. This has been hardware-validated on a secureboot-enabled T41 device; ROM analysis confirms closely related behavior on T32, T40, and A1.
AnalysisAI
Secure boot bypass in Ingenic T41, T32, T40, and A1 SoC boot ROMs allows an attacker with physical write access to boot media to permanently disable secure boot enforcement and execute unsigned or modified firmware. The boot ROM's init table parser applies full 32-bit SRAM write operations from the SPL header before evaluating the secure boot state or invoking signature verification - an ordering flaw that permits an attacker-crafted init-table entry to corrupt the SRAM-resident flag that governs the verification decision. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Physical write access to the device's boot media - SPI NOR flash or NAND flash depending on board design - is the mandatory prerequisite; without a programmer interface to the flash chip, the attack cannot be initiated. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS scores this 6.8 (Medium), driven by AV:P (physical access required) which substantially bounds the realistic threat population despite the high C/I/A impact - the physical prerequisite eliminates all remote and most local attack scenarios. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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