How severe is CVE-2021-38390?

CVE-2021-38390 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-38390 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38390?

CVE-2021-38390 affects Deltaww Diaenergie. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38390?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-38390 published?

CVE-2021-38390 was published on 2021-08-30 and last updated on 2026-06-17.

CVE-2021-38390

CVE-2021-38390 is a critical-severity vulnerability in Deltaww Diaenergie with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 20% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Deltaww Diaenergie
Published: 2021-08-30
Last modified: 2026-06-17

Description

A Blind SQL injection vulnerability exists in the /DataHandler/HandlerEnergyType.ashx endpoint of Delta Electronics DIAEnergie Version 1.7.5 and prior. The application does not properly validate the user-controlled value supplied through the parameter egyid before using it as part of an SQL query. A remote, unauthenticated attacker can exploit this issue to execute arbitrary code in the context of NT SERVICE\MSSQLSERVER.

Frequently asked questions

What is CVE-2021-38390?: A Blind SQL injection vulnerability exists in the /DataHandler/HandlerEnergyType.ashx endpoint of Delta Electronics DIAEnergie Version 1.7.5 and prior. The application does not properly validate the user-controlled value supplied through the parameter egyid before using it as part of an SQL query. A remote, unauthenticated attacker can exploit this issue to execute arbitrary code in the context of NT SERVICE\MSSQLSERVER.
How severe is CVE-2021-38390?: CVE-2021-38390 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-38390 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38390?: CVE-2021-38390 affects Deltaww Diaenergie. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38390?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-38390 published?: CVE-2021-38390 was published on 2021-08-30 and last updated on 2026-06-17.

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-238-03

Affected products (1)

cpe:2.3:a:deltaww:diaenergie:*:*:*:*:*:*:*:*

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