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CVE-2017-2154

25
FAUCET Score

CVE-2017-2154 is an untrusted search path vulnerability affecting multiple JustSystems products, including various versions of Hanako, JUST Office, JUST Government, and JUST School. This flaw allows remote attackers to elevate privileges by tricking a user into executing a malicious DLL placed in an unspecified directory. With a CVSS score of 7.8 (High), successful exploitation could lead to high confidentiality, integrity, and availability impacts, requiring user interaction but with low attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
2015CPE matchmatch criteria
cpe:2.3:a:justsystems:hanako:2015:*:*:*:*:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:justsystems:hanako:2016:*:*:*:*:*:*:*
2017CPE matchmatch criteria
cpe:2.3:a:justsystems:hanako:2017:*:*:*:*:*:*:*
2017CPE matchmatch criteria
cpe:2.3:a:justsystems:hanako:2017:*:*:*:trial_version:*:*:*
5CPE matchmatch criteria
cpe:2.3:a:justsystems:hanako_police:5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.17%
Probability of exploitation in next 30 days
EPSS Percentile
64.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0117 is in the 62nd percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvn.jp / en/jp/JVN54268888/index.html
Third Party AdvisoryVDB Entry
justsystems.com / jp/info/js17002.html
Vendor Advisory