How severe is CVE-2026-7511?

CVE-2026-7511 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-7511 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-7511?

CVE-2026-7511 affects Wolfssl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-7511?

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-2026-7511 have an EU (EUVD) identifier?

Yes. CVE-2026-7511 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39581.

When was CVE-2026-7511 published?

CVE-2026-7511 was published on 2026-06-25 and last updated on 2026-06-27.

CVE-2026-7511

CVE-2026-7511 is a high-severity vulnerability in Wolfssl with a CVSS 3.x base score of 7.5. 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-347.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 5.9
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39581
Weakness: CWE-347
Affected product: Wolfssl
Published: 2026-06-25
Last modified: 2026-06-27

Description

PKCS7_verify signer confusion allows forged signatures, where the signer associated with a signature is not correctly bound, permitting a forged signature to be accepted.

Frequently asked questions

What is CVE-2026-7511?: PKCS7_verify signer confusion allows forged signatures, where the signer associated with a signature is not correctly bound, permitting a forged signature to be accepted.
How severe is CVE-2026-7511?: CVE-2026-7511 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-7511 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-7511?: CVE-2026-7511 affects Wolfssl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-7511?: 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-2026-7511 have an EU (EUVD) identifier?: Yes. CVE-2026-7511 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39581.
When was CVE-2026-7511 published?: CVE-2026-7511 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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