How severe is CVE-2026-28704?

CVE-2026-28704 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-28704 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28704?

CVE-2026-28704 affects Jpcert Emocheck. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28704?

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.

Does CVE-2026-28704 have an EU (EUVD) identifier?

Yes. CVE-2026-28704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21316.

When was CVE-2026-28704 published?

CVE-2026-28704 was published on 2026-04-10 and last updated on 2026-06-17.

CVE-2026-28704

CVE-2026-28704 is a high-severity vulnerability in Jpcert Emocheck 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 v4: 8.4
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21316
Weakness: CWE-427
Affected product: Jpcert Emocheck
Published: 2026-04-10
Last modified: 2026-06-17

Description

Emocheck insecurely loads Dynamic Link Libraries (DLLs). If a crafted DLL file is placed to the same directory, an arbitrary code may be executed with the privilege of the user invoking EmoCheck.

Frequently asked questions

What is CVE-2026-28704?: Emocheck insecurely loads Dynamic Link Libraries (DLLs). If a crafted DLL file is placed to the same directory, an arbitrary code may be executed with the privilege of the user invoking EmoCheck.
How severe is CVE-2026-28704?: CVE-2026-28704 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-28704 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28704?: CVE-2026-28704 affects Jpcert Emocheck. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28704?: 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.
Does CVE-2026-28704 have an EU (EUVD) identifier?: Yes. CVE-2026-28704 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21316.
When was CVE-2026-28704 published?: CVE-2026-28704 was published on 2026-04-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jpcert:emocheck:-:*:*:*:*:windows:*:*

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