How severe is CVE-2026-6412?

CVE-2026-6412 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-6412 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-6412?

CVE-2026-6412 affects Wolfssl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-6412?

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

Does CVE-2026-6412 have an EU (EUVD) identifier?

Yes. CVE-2026-6412 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39560.

When was CVE-2026-6412 published?

CVE-2026-6412 was published on 2026-06-25 and last updated on 2026-06-27.

CVE-2026-6412

CVE-2026-6412 is a medium-severity vulnerability in Wolfssl with a CVSS 3.x base score of 4.3. 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-327.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v4: 2.3
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39560
Weakness: CWE-327
Affected product: Wolfssl
Published: 2026-06-25
Last modified: 2026-06-27

Description

Certificate policy and RFC 8446 compliance concerns regarding the continued acceptance of SHA-1/MD5 in certificate processing.

Frequently asked questions

What is CVE-2026-6412?: Certificate policy and RFC 8446 compliance concerns regarding the continued acceptance of SHA-1/MD5 in certificate processing.
How severe is CVE-2026-6412?: CVE-2026-6412 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-6412 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-6412?: CVE-2026-6412 affects Wolfssl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-6412?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-6412 have an EU (EUVD) identifier?: Yes. CVE-2026-6412 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39560.
When was CVE-2026-6412 published?: CVE-2026-6412 was published on 2026-06-25 and last updated on 2026-06-27.

References

Affected products (1)

cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*

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