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CVE-2026-67873

Quick assessment

Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MZ Automation lib60870-C是MZ Automation组织的一款支持IEC 60870-5-101/104协议的通信库。 MZ Automation lib60870-C 2.4.0版本存在安全漏洞，该漏洞源于服务器端FileSegment ASDU编码路径中FileSegment_encode()函数仅通过FileSegment_GetMaxDataSize()验证独立段长度，未验证当前ASDU帧的剩余容量，可能导致堆缓冲区溢出。

AI Predicted 8.1 Difficulty: Moderate EPSS 0.73% · P52

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a n/a n/a affected
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I. Basic Information for CVE-2026-67873

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A heap-based buffer overflow exists in lib60870-C 2.4.0 in the server-side FileSegment ASDU encoding path. The issue occurs because FileSegment_encode() validates only the standalone segment length via FileSegment_GetMaxDataSize() and does not verify the residual capacity of the current ASDU frame before encoding object fields and segment data
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
MZ Automation lib60870-C 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MZ Automation lib60870-C是MZ Automation组织的一款支持IEC 60870-5-101/104协议的通信库。 MZ Automation lib60870-C 2.4.0版本存在安全漏洞，该漏洞源于服务器端FileSegment ASDU编码路径中FileSegment_encode()函数仅通过FileSegment_GetMaxDataSize()验证独立段长度，未验证当前ASDU帧的剩余容量，可能导致堆缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2026-67873

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III. Intelligence Information for CVE-2026-67873

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Patches & Fixes for CVE-2026-67873 (1)

Proof of Concept for CVE-2026-67873 (1)

Vendor Pages for CVE-2026-67873 (1)

Same Patch Batch · n/a · 2026-08-05 · 14 CVEs total

CVE-2026-67863 7.5 HIGH Open62541 安全漏洞
CVE-2026-67869 7.5 HIGH Open62541 安全漏洞
CVE-2025-70962 Zosi C519M 安全漏洞
CVE-2026-67864 Open62541 安全漏洞
CVE-2026-67865 Systerel S2OPC OPC UA Toolkit 安全漏洞
CVE-2025-63823 Safetipin My Safetipin 安全漏洞
CVE-2025-63822 SirenGPS Android Application 安全漏洞
CVE-2026-67867 Systerel S2OPC OPC UA Toolkit 安全漏洞
CVE-2026-67866 Systerel S2OPC OPC UA Toolkit 安全漏洞
CVE-2026-67870 Open62541 安全漏洞
CVE-2026-67872 Systerel S2OPC OPC UA Toolkit 安全漏洞
CVE-2026-67871 Systerel S2OPC OPC UA Toolkit 安全漏洞
CVE-2026-52466 VuFind 安全漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

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