CVE-2019-5954: JR East Japan train operation information push notification App for Android version 1.2.4 and earlier allows r

Q: How do I fix CVE-2019-5954?

jr east japan: upgrade to newer than 1.2.4. Exact commands for each OS are on this page.

Q: Is CVE-2019-5954 being exploited?

CVE-2019-5954 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-2019-5954 affect?

CVE-2019-5954 affects jr east japan. Severity is critical (CVSS 9.1). JR East Japan train operation information push notification App for Android version 1.2.4 and earlier allows remote attackers to bypass access restriction to obtain or alter the user's registered information via unspecified vectors.

Q: How urgent is CVE-2019-5954?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2019-5954 is a critical-severity flaw (CVSS 9.1) affecting jr east japan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

JR East Japan train operation information push notification App for Android version 1.2.4 and earlier allows remote attackers to bypass access restriction to obtain or alter the user's registered information via unspecified vectors.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Published	2019-05-17
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2019-05-17 16:29 UTCPublished CVE record published
2026-06-17 02:38 UTCUpdated Record last modified

jreast jr east japan UPGRADE

Affected: <= 1.2.4

Fixed in: newer than 1.2.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy jr-east-japan || rpm -q jr-east-japan || jr-east-japan --version

2. UPGRADE to newer than 1.2.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade jr-east-japan

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jr-east-japan

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-2019-5954?

jr east japan: upgrade to newer than 1.2.4. Exact commands for each OS are on this page.

Is CVE-2019-5954 being exploited?

CVE-2019-5954 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-2019-5954 affect?

CVE-2019-5954 affects jr east japan. Severity is critical (CVSS 9.1). JR East Japan train operation information push notification App for Android version 1.2.4 and earlier allows remote attackers to bypass access restriction to obtain or alter the user's registered information via unspecified vectors.

How urgent is CVE-2019-5954?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Android vulnerabilities

References

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