CVE-2020-5523

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CVSS 3.1

7.4 high

EPSS

1%p66

Published

Jan 28, 2020 (Jan 28, 2020)

Modified

Jun 17, 2026

Description

Android App 'MyPallete' and some of the Android banking applications based on 'MyPallete' do not verify X.509 certificates from servers, and also do not properly validate certificates with host-mismatch, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Vendors: 77bank ashikagabank hokkaidobank hokugin naganobank nttdata shikokubank sihd-bk tohoku-bank
Products: 77 bank, ashigin, dogin, hokuriku bank portal, nagagin, mypallete, shikoku bank, ikeda senshu bank, tougin
Weakness: CWE-295
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

NVD CVE.org GitHub PoCs EPSS (1.2%)

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