Is CVE-2026-28678 in the CISA KEV catalog?

No. CVE-2026-28678 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-28678?

CVE-2026-28678 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2026-28678?

CVE-2026-28678 has an EPSS score of 0.17% (6th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-28678?

Upgrade dsa study hub to 2026-02-21 or later.

CVE & CISA-KEV Catalog

CVE-2026-28678

HIGH

8.1

CVSS v3

NVD

Description

Rejected reason: Further research determined the issue is not a vulnerability.

How to fix

Remediation Available

dsa study hubNVD

Affected:< 2026-02-21Fixed in:2026-02-21CVE-2026-28678derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Exploit Intelligence

0.17%probability of exploitation in 30 days

6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-30.