CVE-2018-16179: The Mizuho Direct App for Android version 3.13.0 and earlier does not verify server certificates, which allows

Q: How do I fix CVE-2018-16179?

mizuho direct application: upgrade to newer than 3.13.0. Exact commands for each OS are on this page.

Q: Is CVE-2018-16179 being exploited?

CVE-2018-16179 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-16179 affect?

CVE-2018-16179 affects mizuho direct application. Severity is medium (CVSS 5.9). The Mizuho Direct App for Android version 3.13.0 and earlier does not verify server certificates, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Q: How urgent is CVE-2018-16179?

Priority 37/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.9REMOTEUPGRADE

CVE-2018-16179 is a medium-severity flaw (CVSS 5.9) affecting mizuho direct application. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Mizuho Direct App for Android version 3.13.0 and earlier does not verify server certificates, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-295
Published	2019-01-09
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: mizuhobank

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-01-09 23:29 UTCPublished CVE record published
2026-06-17 01:43 UTCUpdated Record last modified

mizuhobank mizuho direct application UPGRADE

Affected: <= 3.13.0

Fixed in: newer than 3.13.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mizuho-direct-application || rpm -q mizuho-direct-application || mizuho-direct-application --version

2. UPGRADE to newer than 3.13.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mizuho-direct-application

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mizuho-direct-application

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2018-16179?

mizuho direct application: upgrade to newer than 3.13.0. Exact commands for each OS are on this page.

Is CVE-2018-16179 being exploited?

CVE-2018-16179 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-2018-16179 affect?

CVE-2018-16179 affects mizuho direct application. Severity is medium (CVSS 5.9). The Mizuho Direct App for Android version 3.13.0 and earlier does not verify server certificates, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

How urgent is CVE-2018-16179?

Priority 37/100. Remotely exploitable, no login, no user action

Software pages

Android vulnerabilities

References

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