PatchTheCVECVE-2019-14353: On Trezor One devices before 1.8.2, a side channel for the row-based OLED display was found
CVE-2019-14353 is a medium-severity flaw (CVSS 4.2) affecting one firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
On Trezor One devices before 1.8.2, a side channel for the row-based OLED display was found. The power consumption of each row-based display cycle depends on the number of illuminated pixels, allowing a partial recovery of display contents. For example, a hardware implant in the USB cable might be able to leverage this behavior to recover confidential secrets such as the PIN and BIP39 mnemonic. In other words, the side channel is relevant only if
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.2 (Medium) |
| Attack vector | Physical |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 69%) |
| CISA exploited list | No |
| Weakness | CWE-203 |
| Published | 2019-08-08 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2019-14353?
one firmware: upgrade to 1.8.2. Exact commands for each OS are on this page.
Is CVE-2019-14353 being exploited?
CVE-2019-14353 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2019-14353 affect?
CVE-2019-14353 affects one firmware. Severity is medium (CVSS 4.2). On Trezor One devices before 1.8.2, a side channel for the row-based OLED display was found. The power consumption of each row-based display cycle depends on the number of illuminated pixels, allowing a partial recovery of display contents.
How urgent is CVE-2019-14353?
Priority 28/100. Public exploit reference
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