How severe is CVE-2021-38411?

CVE-2021-38411 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-38411 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38411?

CVE-2021-38411 affects Deltaww Dialink. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38411?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-38411 published?

CVE-2021-38411 was published on 2021-11-03 and last updated on 2026-06-17.

CVE-2021-38411

CVE-2021-38411 is a medium-severity vulnerability in Deltaww Dialink with a CVSS 3.x base score of 5.5. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 3.5
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Deltaww Dialink
Published: 2021-11-03
Last modified: 2026-06-17

Description

Delta Electronics DIALink versions 1.2.4.0 and prior is vulnerable to cross-site scripting because an authenticated attacker can inject arbitrary JavaScript code into the parameter deviceName of the API modbusWriter-Reader, which may allow an attacker to remotely execute code.

Frequently asked questions

What is CVE-2021-38411?: Delta Electronics DIALink versions 1.2.4.0 and prior is vulnerable to cross-site scripting because an authenticated attacker can inject arbitrary JavaScript code into the parameter deviceName of the API modbusWriter-Reader, which may allow an attacker to remotely execute code.
How severe is CVE-2021-38411?: CVE-2021-38411 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-38411 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38411?: CVE-2021-38411 affects Deltaww Dialink. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38411?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-38411 published?: CVE-2021-38411 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:*:*:*:*:*:*:*:*

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