CVE-2026-95208 wolfSSL - Denial of Service

wolfSSL v5.9.1 and v5.9.2 contain a denial of service caused by improper handling in ConfirmNameConstraints() function when processing crafted Certificate Authority certificates, letting attackers cause valid certificates without SAN to be rejected, exploit requires crafted CA certificates.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
8 October 2026
Updated
15 October 2026
Weakness
CWE-295

Vendor fix

Update to a version later than v5.9.2 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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