CVE-2021-22709

Code execution via unchecked CGF buffer copy

Published Mar 11, 2021 · Updated Aug 3, 2024

Stack-based buffer overflow in Schneider Electric IGSS Definition 15.0.0.21041 and earlier allows attackers to execute code via a malicious CGF file. CGF parsing copies user-supplied data into a stack-based buffer without first validating its length, permitting the copy to overwrite stack memory. A target user must import or open the crafted file, after which code runs in the current process context and project data can be lost.

CVSS severity7.8
High
EPSS probability2.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Schneider Electric IGSS Definition 15.0.0.21041 and earlier allows attackers to execute code via a malicious CGF file. CGF parsing copies user-supplied data into a stack-based buffer without first validating its length, permitting the copy to overwrite stack memory. A target user must import or open the crafted file, after which code runs in the current process context and project data can be lost.

The record

CVE
CVE-2021-22709
Published
Mar 11, 2021
Updated
Aug 3, 2024
Vendor
Schneider Electric
Product
IGSS
Classifications
CWE-119, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=Interactive Graphical SCADA System (IGSS) Definition (Def.exe) V15.0.0.21041 and prior

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Schneider Electric · IGSSversion=Interactive Graphical SCADA System (IGSS) Definition (Def.exe) V15.0.0.21041 and prior

Published CVSS scores

9.3NIST NVDAV:N/AC:M/Au:N/C:C/I:C/A:C
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1204.002Malicious File
T1203Exploitation for Client Execution

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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