CVE-2021-42706
CVE-2021-42706 is a high-severity vulnerability in Advantech Webaccess Hmi Designer 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: 4.6
- EPSS exploit prediction: 0% (19th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-416
- Affected product: Advantech Webaccess Hmi Designer
- Published:
- Last modified:
Description
This vulnerability could allow an attacker to disclose information and execute arbitrary code on affected installations of WebAccess/MHI Designer
Frequently asked questions
- What is CVE-2021-42706?
- This vulnerability could allow an attacker to disclose information and execute arbitrary code on affected installations of WebAccess/MHI Designer
- How severe is CVE-2021-42706?
- CVE-2021-42706 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-2021-42706 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-42706?
- CVE-2021-42706 affects Advantech Webaccess Hmi Designer. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-42706?
- 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-2021-42706 published?
- CVE-2021-42706 was published on 2021-11-15 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:advantech:webaccess_hmi_designer:*:*:*:*:*:*:*:*
More vulnerabilities in Advantech Webaccess Hmi Designer
- CVE-2019-10961 — High (CVSS 8.8): In Advantech WebAccess HMI Designer Version 2.1.9.23 and prior, processing specially crafted MCR files lacking proper…
- CVE-2018-8837 — High (CVSS 7.8): Processing specially crafted .pm3 files in Advantech WebAccess HMI Designer 2.1.7.32 and prior may cause the system to…
- CVE-2018-8835 — High (CVSS 7.8): Double free vulnerabilities in Advantech WebAccess HMI Designer 2.1.7.32 and prior caused by processing specially…
- CVE-2018-8833 — High (CVSS 7.8): Heap-based buffer overflow vulnerabilities in Advantech WebAccess HMI Designer 2.1.7.32 and prior caused by processing…
- CVE-2021-42703 — Medium (CVSS 5.4): This vulnerability could allow an attacker to send malicious Javascript code resulting in hijacking of the user’s…
All CVEs affecting Advantech Webaccess Hmi Designer →
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