CVE-2026-78685Network attack vector

Unauthenticated OS command execution via crafted HTML

Published Aug 25, 2026 · Updated Aug 25, 2026

Remote code execution in Le-yan 樂晴醫事管理系統 2.4.2.8 through 2.5.1.9 allows remote attackers to execute arbitrary OS commands. A crafted HTML page triggers the flaw, but TWCERT/CC has not disclosed the affected endpoint, input field, or server-side operation. No authentication is required, but a user must actively open the page; successful exploitation grants control over application data and service operation.

CVSS severity8.8
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code execution in Le-yan 樂晴醫事管理系統 2.4.2.8 through 2.5.1.9 allows remote attackers to execute arbitrary OS commands. A crafted HTML page triggers the flaw, but TWCERT/CC has not disclosed the affected endpoint, input field, or server-side operation. No authentication is required, but a user must actively open the page; successful exploitation grants control over application data and service operation.

The record

CVE
CVE-2026-78685
Published
Aug 25, 2026
Updated
Aug 25, 2026
Vendor
Le-yan
Product
樂晴醫事管理系統
Classifications
CWE-940, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.4.2.8 <=2.5.1.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Le-yan · 樂晴醫事管理系統version=2.4.2.8 <=2.5.1.9

Published CVSS scores

8.8TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.6TWCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-940Improper Verification of Source of a Communication Channel
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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