CVE-2021-22808
CVE-2021-22808 is a high-severity vulnerability in Schneider-electric Guicon with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (54th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-416
- Affected product: Schneider-electric Guicon
- Published:
- Last modified:
Description
A CWE-416: Use After Free vulnerability exists that could cause arbitrary code execution 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
Frequently asked questions
- What is CVE-2021-22808?
- A CWE-416: Use After Free vulnerability exists that could cause arbitrary code execution 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
- How severe is CVE-2021-22808?
- CVE-2021-22808 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-22808 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-22808?
- CVE-2021-22808 affects Schneider-electric Guicon. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-22808?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-22808 published?
- CVE-2021-22808 was published on 2022-01-28 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:schneider-electric:guicon:*:*:*:*:*:*:*:*
More vulnerabilities in Schneider-electric Guicon
- CVE-2021-22807 — High (CVSS 7.8): A CWE-787: Out-of-bounds Write vulnerability exists that could cause arbitrary code execution when a malicious *.gd1…
- CVE-2018-7815 — High (CVSS 7.8): A Type Confusion (CWE-843) vulnerability exists in Eurotherm by Schneider Electric GUIcon V2.0 (Gold Build 683.0) on…
- CVE-2018-7814 — High (CVSS 7.8): A Stack-based Buffer Overflow (CWE-121) vulnerability exists in Eurotherm by Schneider Electric GUIcon V2.0 (Gold Build…
- CVE-2018-7813 — High (CVSS 7.8): A Type Confusion (CWE-843) vulnerability exists in Eurotherm by Schneider Electric GUIcon V2.0 (Gold Build 683.0) on…
- CVE-2021-22809 — Medium (CVSS 5.5): A CWE-125:Out-of-Bounds Read vulnerability exists that could cause unintended data disclosure when a malicious *.gd1…
All CVEs affecting Schneider-electric Guicon →
Other CWE-416 (Use After Free) vulnerabilities
- CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
- CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
- CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
- CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
- CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
- CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…