How severe is CVE-2021-38416?

CVE-2021-38416 has a CVSS 3.x base score of 7.8, 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-2021-38416 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38416?

CVE-2021-38416 affects Deltaww Dialink. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38416?

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-2021-38416 published?

CVE-2021-38416 was published on 2021-11-03 and last updated on 2026-06-17.

CVE-2021-38416

CVE-2021-38416 is a high-severity vulnerability in Deltaww Dialink 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-427.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.4
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-427
Affected product: Deltaww Dialink
Published: 2021-11-03
Last modified: 2026-06-17

Description

Delta Electronics DIALink versions 1.2.4.0 and prior insecurely loads libraries, which may allow an attacker to use DLL hijacking and takeover the system where the software is installed.

Frequently asked questions

What is CVE-2021-38416?: Delta Electronics DIALink versions 1.2.4.0 and prior insecurely loads libraries, which may allow an attacker to use DLL hijacking and takeover the system where the software is installed.
How severe is CVE-2021-38416?: CVE-2021-38416 has a CVSS 3.x base score of 7.8, 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-2021-38416 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38416?: CVE-2021-38416 affects Deltaww Dialink. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38416?: 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-2021-38416 published?: CVE-2021-38416 was published on 2021-11-03 and last updated on 2026-06-17.

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-294-02

Affected products (1)

cpe:2.3:a:deltaww:dialink:*:*:*:*:*:*:*:*

More vulnerabilities in Deltaww Dialink

CVE-2025-58321 — Critical (CVSS 10.0): Delta Electronics DIALink has an Directory Traversal Authentication Bypass Vulnerability.
CVE-2022-2660 — Critical (CVSS 9.8): Delta Industrial Automation DIALink versions 1.4.0.0 and prior are vulnerable to the use of a hard-coded cryptographic…
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CVE-2022-2969 — High (CVSS 8.1): Delta Industrial Automation DIALink versions prior to v1.5.0.0 Beta 4 uses an external input to construct a pathname…
CVE-2021-38422 — High (CVSS 7.8): Delta Electronics DIALink versions 1.2.4.0 and prior stores sensitive information in cleartext, which may allow an…
CVE-2021-38420 — High (CVSS 7.8): Delta Electronics DIALink versions 1.2.4.0 and prior default permissions give extensive permissions to low-privileged…

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Other CWE-427 (Uncontrolled Search Path Element) vulnerabilities

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CVE-2019-25268 — Critical (CVSS 9.8): NREL BEopt 2.8.0.0 contains a DLL hijacking vulnerability that allows attackers to load arbitrary libraries by tricking…
CVE-2023-53959 — Critical (CVSS 9.8): FileZilla Client 3.63.1 contains a DLL hijacking vulnerability that allows attackers to execute malicious code by…
CVE-2025-65741 — Critical (CVSS 9.8): Sublime Text 3 Build 3208 or prior for MacOS is vulnerable to Dylib Injection. An attacker could compile a .dylib file…
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Browse all CWE-427 (Uncontrolled Search Path Element) vulnerabilities →