Ledger Nano X, Flex, and Stax devices contain a denial of service vulnerability in the MCU firmware update process due to missing validation of the reset_handler parameter during firmware flashing. An attacker can provide a crafted reset_handler address pointing to invalid memory or attacker-controlled code to cause the device to enter an unrecoverable fault state during boot, resulting in permanent loss of operability.
Metrics
Affected Vendors & Products
References
History
Wed, 20 May 2026 15:30:00 +0000
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ssvc
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Wed, 20 May 2026 14:30:00 +0000
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Wed, 20 May 2026 14:15:00 +0000
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Wed, 20 May 2026 11:45:00 +0000
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Ledger
Ledger flex Ledger nano X Ledger stax |
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| Vendors & Products |
Ledger
Ledger flex Ledger nano X Ledger stax |
Tue, 19 May 2026 22:00:00 +0000
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| Description | Ledger Nano X, Flex, and Stax devices contain a denial of service vulnerability in the MCU firmware update process due to missing validation of the reset_handler parameter during firmware flashing. An attacker can provide a crafted reset_handler address pointing to invalid memory or attacker-controlled code to cause the device to enter an unrecoverable fault state during boot, resulting in permanent loss of operability. | |
| Title | Ledger Nano X, Flex, Stax MCU Firmware Update Denial of Service | |
| Weaknesses | CWE-1284 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-05-19T21:41:50.473Z
Updated: 2026-05-20T14:45:40.508Z
Reserved: 2026-05-19T21:28:04.419Z
Link: CVE-2025-15645
Updated: 2026-05-20T14:43:55.897Z
Status : Deferred
Published: 2026-05-19T22:16:36.187
Modified: 2026-05-20T14:16:36.080
Link: CVE-2025-15645
No data.