Description
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.
Published: 2026-08-19
Score: 6.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability allows an attacker with physical write access to the device’s boot media to insert a custom init‑table entry. Ingenic T41, T32, T40, and A1 boot ROMs parse and execute this table before validating the secure‑boot state or verifying the code signature. Because the parser supports full‑address 32‑bit SRAM writes, the malicious entry can alter the secure‑boot flag stored in SRAM, effectively disabling signature checking and permitting unsigned or tampered first‑stage boot code. This results in a complete bypass of the trusted boot chain, allowing arbitrary firmware execution.

Affected Systems

Ingenic SoCs, specifically the T41, T32, T40, and A1 families, are affected. No vendor CNA is listed, and no specific firmware versions are mentioned, so any device running the stock boot ROM is potentially vulnerable.

Risk and Exploitability

The flaw requires physical write access to the boot media, limiting attackers to environments where firmware can be modified, such as during manufacturing, repair, or by a malicious insider. While the EPSS score is less than 1% and the vulnerability is not listed in CISA KEV, disabling secure boot allows an adversary to replace the first‑stage boot image with malicious firmware, compromising confidentiality, integrity, and availability of the device. The CVSS score of 6.8 indicates a moderate severity flaw. The weakness falls under several categories: CWE‑284, CWE‑347, CWE‑474.

Generated by OpenCVE AI on August 24, 2026 at 23:21 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply any vendor‑supplied firmware update that changes the boot ROM to validate the secure‑boot state before parsing the init table.
  • If a patch is not yet available, physically secure the boot media to prevent write access and configure the device to boot only from protected storage locations.
  • Implement additional hardware‑enforced secure‑boot mechanisms, such as cryptographic verification at power‑on, to ensure that unsigned firmware cannot be loaded.

Generated by OpenCVE AI on August 24, 2026 at 23:21 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Mon, 24 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
Title Secure Boot Bypass via Init Table Parsing in Ingenic T41/T32/T40/A1 SoCs
Weaknesses CWE-287

Mon, 24 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
CWE-347
CWE-474
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 21 Aug 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Opensensor
Opensensor ingenic T31
Vendors & Products Opensensor
Opensensor ingenic T31

Thu, 20 Aug 2026 07:45:00 +0000

Type Values Removed Values Added
Title Secure Boot Bypass via Init Table Parsing in Ingenic T41/T32/T40/A1 SoCs
Weaknesses CWE-287

Thu, 20 Aug 2026 04:30:00 +0000

Type Values Removed Values Added
Title Secure Boot Bypass via Erroneous Init Table Order in Ingenic T41/T32/T40/A1 SoCs
Weaknesses CWE-287

Wed, 19 Aug 2026 20:15:00 +0000

Type Values Removed Values Added
Title Secure Boot Bypass via Erroneous Init Table Order in Ingenic T41/T32/T40/A1 SoCs
Weaknesses CWE-287

Wed, 19 Aug 2026 14:00:00 +0000

Type Values Removed Values Added
Description 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.
References

Subscriptions

Opensensor Ingenic T31
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-24T20:01:19.565Z

Reserved: 2026-06-05T00:00:00.000Z

Link: CVE-2026-50719

cve-icon Vulnrichment

Updated: 2026-08-24T20:00:39.153Z

cve-icon NVD

Status : Deferred

Published: 2026-08-19T14:17:31.977

Modified: 2026-09-09T16:04:24.933

Link: CVE-2026-50719

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-24T23:30:17Z

Weaknesses
  • CWE-284

    Improper Access Control

  • CWE-347

    Improper Verification of Cryptographic Signature

  • CWE-474

    Use of Function with Inconsistent Implementations