CVE-2021-40389
CVE-2021-40389 is a high-severity vulnerability in Advantech Deviceon/iedge with a CVSS 3.x base score of 8.8. 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-276.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 7.2
- EPSS exploit prediction: 0% (29th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-276
- Affected product: Advantech Deviceon/iedge
- Published:
- Last modified:
Description
A privilege escalation vulnerability exists in the installation of Advantech DeviceOn/iEdge Server 1.0.2. A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.
Frequently asked questions
- What is CVE-2021-40389?
- A privilege escalation vulnerability exists in the installation of Advantech DeviceOn/iEdge Server 1.0.2. A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.
- How severe is CVE-2021-40389?
- CVE-2021-40389 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-40389 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-40389?
- CVE-2021-40389 affects Advantech Deviceon/iedge. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-40389?
- 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-2021-40389 published?
- CVE-2021-40389 was published on 2022-01-28 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:advantech:deviceon\/iedge:1.0.2:*:*:*:*:*:*:*
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