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Vulnerabilities CVE-2026-43820

CVE-2026-43820

None
Open
TLP:CLEAR

AI Analysis

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Description

NIOSSLCertificate._subjectAlternativeNames provides access to the raw bytes for a cert's SANs. NIOSSL provides access to a buffer assumed to be backed by an ASN1_STRING, but not all SANs are backed by ASN1_STRING, so accessing the buffer for such a type can lead to out-of-bounds memory access. This vulnerability is addressed in swift-nio-ssl version 2.37.2.

Details

EPSS Score
0.08%

0.2th percentile

Confidence
90%
Published
Jul 23, 2026
Last Modified
Jul 24, 2026
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