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CVE-2026-12927
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.
This record: live connection— last retrieved: 24 September 2026 at 05:11.
Taken directly from NVD, CISA or the vendor — sometimes in English, unchanged from the source.
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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
LOCAL
Privileges required
NONE
User interaction
REQUIRED
Confidentiality
High
Integrity
High
Availability
High
Probability of exploitation within 30 days
0.2%
Percentile
6e
Source: FIRST.org, updated on 23 September 2026.
Version 18.0.0.26125 of the IGSS Definition module includes a fix for this vulnerability and is available for download through IGSS Master > Update IGSS Software or here: https://igss.schneider-electric.com/igss/igssupdates/v180/IGSSUPDATE.ZIP
Our own interpretation and context for the source data above.
IACS Radar assessment
Our own interpretation and context for this vulnerability — not an official source.
IACS Radar priority score
Based on CVSS 7.8, EPSS 0.2%, industrial relevance 55/100.
Combines CVSS, EPSS, KEV status, industrial relevance and exposure relevance — a complement to, not a replacement for, the individual scores below and above.
Conditions for exploitation
Operational impact & energy relevance
Possible loss of visibility of or control over the process upon successful exploitation.
Assessed as relevant to the energy sector based on: Vermeld in een officiële CISA ICS Advisory, wat directe relevantie voor industriële besturingssystemen bevestigt. Vendor "Schneider Electric" is a known supplier of equipment for the energy sector.
Recommended defensive measures
Industrial relevance score
Classification is provisional; manual verification by an OT security analyst is recommended.
Classified by IACS Radar-analysepijplijn (geautomatiseerd) on 24 September 2026.
IEC 62443 mapping
Automatic IACS Radar assessment based on the reported CWE weakness classification; not an official certification statement.