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CVE-2018-17889

20
FAUCET Score

CVE-2018-17889 is an XML external entity (XXE) injection vulnerability affecting WECON Technology Co., Ltd. PI Studio HMI versions 4.1.9 and prior, and PI Studio versions 4.2.34 and prior. This flaw, residing in the XMLParser when parsing project files, could lead to sensitive information disclosure. Rated as Medium severity (CVSS 5.3), it requires user interaction (UI:R) and has high confidentiality impact (C:H) with a network attack vector (AV:N) and high attack complexity (AC:H). There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.2.34CPE matchmatch criteria
cpe:2.3:a:we-con:pi_studio:*:*:*:*:*:*:*:*
<= 4.1.9CPE matchmatch criteria
cpe:2.3:a:we-con:pi_studio_hmi:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 79th percentile among its peer group of 705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.2 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 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ics-cert.us-cert.gov / advisories/ICSA-18-277-01
Third Party AdvisoryUS Government Resource