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CVE-2018-0623: Untrusted search path vulnerability in Multiple Yayoi 17 Series products (Yayoi Kaikei 17 Series Ver.23.1.1 an

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HIGH 7.8UPGRADEUPGRADEUPGRADE

CVE-2018-0623 is a high-severity flaw (CVSS 7.8) affecting aoiro shinkoku, hanbai, kaikei. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Untrusted search path vulnerability in Multiple Yayoi 17 Series products (Yayoi Kaikei 17 Series Ver.23.1.1 and earlier, Yayoi Aoiro Shinkoku 17 Ver.23.1.1 and earlier, Yayoi Kyuuyo 17 Ver.20.1.4 and earlier, Yayoi Kyuuyo Keisan 17 Ver.20.1.4 and earlier, Yayoi Hanbai 17 Series Ver. 20.0.2 and earlier, and Yayoi Kokyaku Kanri 17 Ver.11.0.2 and earlier) allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory. This

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score7.8 (High)
Attack vectorLocal
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance1.0% (top 38%)
CISA exploited listNo
WeaknessCWE-426
Published2018-09-07
Last modified2026-06-17
Publisher (CNA): JPCERT/CC · Vendor: yayoi-kk

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

Am I affected?

Timeline

yayoi-kk aoiro shinkoku UPGRADE
Affected: <= 23.1.1
Fixed in: newer than 23.1.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy aoiro-shinkoku || rpm -q aoiro-shinkoku || aoiro-shinkoku --version
2. UPGRADE to newer than 23.1.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade aoiro-shinkoku
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade aoiro-shinkoku
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
yayoi-kk hanbai UPGRADE
Affected: <= 20.0.2
Fixed in: newer than 20.0.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy hanbai || rpm -q hanbai || hanbai --version
2. UPGRADE to newer than 20.0.2 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade hanbai
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade hanbai
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
yayoi-kk kaikei UPGRADE
Affected: <= 23.1.1
Fixed in: newer than 23.1.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy kaikei || rpm -q kaikei || kaikei --version
2. UPGRADE to newer than 23.1.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade kaikei
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade kaikei
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
yayoi-kk kokyaku kanri UPGRADE
Affected: <= 11.0.2
Fixed in: newer than 11.0.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy kokyaku-kanri || rpm -q kokyaku-kanri || kokyaku-kanri --version
2. UPGRADE to newer than 11.0.2 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade kokyaku-kanri
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade kokyaku-kanri
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
yayoi-kk kyuuyo UPGRADE
Affected: <= 20.1.4
Fixed in: newer than 20.1.4
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy kyuuyo || rpm -q kyuuyo || kyuuyo --version
2. UPGRADE to newer than 20.1.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade kyuuyo
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade kyuuyo
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
yayoi-kk kyuuyo keisan UPGRADE
Affected: <= 20.1.4
Fixed in: newer than 20.1.4
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy kyuuyo-keisan || rpm -q kyuuyo-keisan || kyuuyo-keisan --version
2. UPGRADE to newer than 20.1.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade kyuuyo-keisan
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade kyuuyo-keisan
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-2018-0623?

aoiro shinkoku: upgrade to newer than 23.1.1; hanbai: upgrade to newer than 20.0.2; kaikei: upgrade to newer than 23.1.1. Exact commands for each OS are on this page.

Is CVE-2018-0623 being exploited?

CVE-2018-0623 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-2018-0623 affect?

CVE-2018-0623 affects aoiro shinkoku, hanbai, kaikei. Severity is high (CVSS 7.8). Untrusted search path vulnerability in Multiple Yayoi 17 Series products (Yayoi Kaikei 17 Series Ver.23.1.1 and earlier, Yayoi Aoiro Shinkoku 17 Ver.23.1.1 and earlier, Yayoi Kyuuyo 17 Ver.20.1.4 and earlier, Yayoi Kyuuyo Keisan 17 Ver.20.1

How urgent is CVE-2018-0623?

Priority 43/100. High severity

Related CVEs

References

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