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CVE-2026-12927

Quick assessment

Affected
Schneider Electric IGSS Definition (Def.exe)
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.

Schneider Electric IGSS Definition是美国Schneider Electric公司开源的一款自动化控制软件。 Schneider Electric IGSS Definition 18.0.0.26124及之前版本存在缓冲区错误漏洞，该漏洞源于存在越界写入漏洞，当导入恶意CGF文件时，可能导致数据丢失或任意代码执行。

CVSS 8.4 · High EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Schneider Electric IGSS Definition (Def.exe) Version 18.0.0.26124 and prior affected
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I. Basic Information for CVE-2026-12927

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
CWE-787 Out-of-bounds write vulnerability exists that could cause loss of data or potentially risk arbitrary code execution when a malicious CGF file is imported to IGSS Definition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
Schneider Electric IGSS Definition 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Schneider Electric IGSS Definition是美国Schneider Electric公司开源的一款自动化控制软件。 Schneider Electric IGSS Definition 18.0.0.26124及之前版本存在缓冲区错误漏洞，该漏洞源于存在越界写入漏洞，当导入恶意CGF文件时，可能导致数据丢失或任意代码执行。
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
Schneider Electric IGSS Definition (Def.exe) Version 18.0.0.26124 and prior -

II. Public POCs for CVE-2026-12927

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III. Intelligence Information for CVE-2026-12927

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Vendor Advisories for CVE-2026-12927 (1)

Same Patch Batch · Schneider Electric · 2026-07-29 · 3 CVEs total

CVE-2026-0667 9.3 CRITICAL Schneider Electric SCADAPack 47x 异常处理不当漏洞
CVE-2026-14354 8.7 HIGH Schneider Electric EcoStruxure Cybersecurity Admin Expert 信任管理问题漏洞

IV. Related Vulnerabilities

Same vendor: Schneider Electric
Same weakness: CWE-787

V. Comments for CVE-2026-12927

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