What is CVE-2020-18172?

CVE-2020-18172 is a critical-severity vulnerability in Trezor Bridge, classified under Code Injection. CVSS score: 9.8/10. Published 2021-07-26.

How severe is CVE-2020-18172?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Trezor Bridge

CVE-2020-18172

A code injection vulnerability in the SeDebugPrivilege component of Trezor Bridge 2.0.27 allows attackers to escalate privileges.

Vulnerability class: RCE (Remote Code Execution)

Published 2021-07-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (70.3th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Trezor Bridge — versions 2.0.27

Weakness classification (CWE)

CWE-94 — Code Injection

References

github.com/GitHubAssessments/CVE_07_2019/blob/master/Report.pdf (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-18172?: CVE-2020-18172 is a critical-severity vulnerability in Trezor Bridge, classified under Code Injection. CVSS score: 9.8/10. Published 2021-07-26.
How severe is CVE-2020-18172?: Critical severity. CVSS v3 base score is 9.8 out of 10.