CVE-2021-22711
No exploitation reported by the sources we read.
- Published2021-03-11
- WeaknessCWE-119
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A CWE-119:Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists in Interactive Graphical SCADA System (IGSS) Definition (Def.exe) V15.0.0.21041 and prior, which could result in arbitrary read or write conditions when malicious CGF (Configuration Group File) file is imported to IGSS Definition due to missing validation of input data.
Timeline
dates in UTC- 2021-03-1121:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-22711?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-22711?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 15.0 | ≤ 15.0.0.21041 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Schneider Electric IGSS SCADA Software
IGSS Definition (Def.exe): Version 15.0.0.21041 and prior
Fix
- Mitigation from the vendor CISA ICSA-21-070-01 · 1 productSchneider Electric has provided Version 15.0.0.21042 of the IGSS Definition module: Def.exe to address these vulnerabilities. The update is available for download through IGSS Master > Update IGSS Software or from the Schneider Electric support page.
- Mitigation from the vendor CISA ICSA-21-070-01 · 1 productAvoid importing CGF files from untrusted sources.
- Mitigation from the vendor CISA ICSA-21-070-01 · 1 productFor more information, see the Schneider Electric security notification.
Advisories and patches
- download.schneider-electric.comPatch · Vendor Advisory
- www.se.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.17.8read 2026-10-23
- NVDCVSS 2.09.3read 2026-10-23
- CNAweakness (CWE)CWE-119read 2026-10-23
- FIRST EPSSEPSS score0.9 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- 2021-03-11
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-22711?
Is CVE-2021-22711 actively exploited?
What is the CVSS score for CVE-2021-22711?
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