7.5
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Lifecycle Timeline
4
Patch Released
Apr 10, 2026 - 08:30 nvd
Patch available
Analysis Generated
Apr 01, 2026 - 19:00 vuln.today
EUVD ID Assigned
Apr 01, 2026 - 19:00 euvd
EUVD-2026-17997
CVE Published
Apr 01, 2026 - 00:00 nvd
HIGH 7.5
Description
Mbed TLS 3.5.0 to 3.6.5 fixed in 3.6.6 and 4.1.0 has a buffer overflow in the x509_inet_pton_ipv6() function
Analysis
Buffer overflow in Mbed TLS versions 3.5.0 through 3.6.5 allows remote attackers to cause a denial of service or potentially execute arbitrary code via crafted input to the x509_inet_pton_ipv6() function used in X.509 certificate parsing. The vulnerability is fixed in Mbed TLS 3.6.6 and 4.1.0. …
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Priority Score
38
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +38
POC: 0
Vendor Status
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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Verify the source reputation and cross-reference with known databases (Exploit-DB, GitHub Security).
EUVD-2026-17997
GHSA-jr87-qch5-gjc6