CVE-2026-5447
Heap buffer overflow in CertFromX509() via AuthorityKeyIdentifier
HIGH
7.5
CVSS Score
Published: April 9, 2026 at 08:13 PM UTC
Updated: June 17, 2026 at 10:59 AM UTC
1 product affected across 1 vendorwolfSSL
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Severity
HIGH7.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit
Description
Heap buffer overflow in CertFromX509 via AuthorityKeyIdentifier size confusion. A heap buffer overflow occurs when converting an X.509 certificate internally due to incorrect size handling of the AuthorityKeyIdentifier extension.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusANALYZED
CWE
CWE-122
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