EUVD-2026-18570
GHSA-9m44-rr2w-ppp7
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
3
Analysis Generated
Apr 03, 2026 - 02:30 vuln.today
EUVD ID Assigned
Apr 03, 2026 - 02:30 euvd
EUVD-2026-18570
CVE Published
Apr 03, 2026 - 01:32 nvd
HIGH 7.5
Description
A remote attacker can supply a short X-Wing HPKE encapsulated key and trigger an out-of-bounds read in the C decapsulation path, potentially causing a crash or memory disclosure depending on runtime protections. This issue is fixed in swift-crypto version 4.3.1.
Analysis
Out-of-bounds read in Apple swift-crypto X-Wing HPKE decapsulation allows remote attackers to trigger memory disclosure or denial of service by supplying a malformed encapsulated key. The vulnerability affects swift-crypto versions prior to 4.3.1 and any macOS or downstream applications using vulnerable versions of the cryptographic library.
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Priority Score
38
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +38
POC: 0
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