A CWE-125:Out-of-Bounds Read vulnerability exists that could cause unintended data…
Priority LOW 26CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
Summary
A CWE-125:Out-of-Bounds Read vulnerability exists that could cause unintended data disclosure when a malicious *.gd1 configuration file is loaded into the GUIcon tool. Affected Product: Eurotherm by Schneider Electric GUIcon Version 2.0 (Build 683.003) and prior
Why it matters now
EPSS 0.00647 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:schneider-electric:guicon:*:*:*:*:*:*:*:* | up to 2.0 | Vulnerable | Schneider Electric |
- cpe:2.3:a:schneider-electric:guicon:*:*:*:*:*:*:*:* Versions up to 2.0 Vulnerable ·Schneider Electric
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-22809
- 2026-10-03 Alias added: GHSA-gx8q-f4px-p448
- 2026-10-19 EPSS moved to the 50th–90th percentile
References
More Schneider Electric Guicon vulnerabilities
- TI-2018-05654 Out-of-bounds write in Schneider Electric Eurotherm by Schneider Electric GUIcon V2.0 CVSS 3.0HIGH 7.8
- TI-2021-05688 A CWE-416: Use After Free vulnerability exists that could cause arbitrary code execution… CVSS 3.1HIGH 7.8
- TI-2021-05687 A CWE-787: Out-of-bounds Write vulnerability exists that could cause arbitrary code… CVSS 3.1HIGH 7.8
- TI-2018-05655 Incorrect type conversion in Schneider Electric Eurotherm by Schneider Electric GUIcon… CVSS 3.0HIGH 7.8
- TI-2018-05653 Incorrect type conversion in Schneider Electric Eurotherm by Schneider Electric GUIcon… CVSS 3.0HIGH 7.8
Sources
- CVE-2021-22809 · CVE Program
- CVE-2021-22809 · NVD
- FIRST EPSS
- GHSA-gx8q-f4px-p448 · GitHub Advisory Database · CC BY 4.0
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