How severe is CVE-2026-12818?

CVE-2026-12818 has a CVSS 4.0 base score of 9.3, rated critical severity.

Is CVE-2026-12818 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-12818?

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-2026-12818 published?

CVE-2026-12818 was published on 2026-06-30.

CVE-2026-12818

CVE-2026-12818 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. 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-770.

Key facts

Severity: Critical (CVSS 4.0 base score 9.3)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Published: 2026-06-30
Last modified: 2026-06-30

Description

Delta Electronics DVP12SE PLCs are susceptible to a resource allocation vulnerability without limits or throttling (CWE-770) within their Modbus TCP service.

Frequently asked questions

What is CVE-2026-12818?: Delta Electronics DVP12SE PLCs are susceptible to a resource allocation vulnerability without limits or throttling (CWE-770) within their Modbus TCP service.
How severe is CVE-2026-12818?: CVE-2026-12818 has a CVSS 4.0 base score of 9.3, rated critical severity.
Is CVE-2026-12818 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-12818?: 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-2026-12818 published?: CVE-2026-12818 was published on 2026-06-30.

References

https://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2026-00011_DVP12SE%20Multiple%20Vulnerabilities%20(CVE-2026-12818,%20CVE-2026-12819)_v1.0.pdf

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