CVE-2026-5188 (GCVE-0-2026-5188)
Vulnerability from cvelistv5
Published
2026-04-10 03:24
Modified
2026-04-10 13:41
CWE
Summary
An integer underflow issue exists in wolfSSL when parsing the Subject Alternative Name (SAN) extension of X.509 certificates. A malformed certificate can specify an entry length larger than the enclosing sequence, causing the internal length counter to wrap during parsing. This results in incorrect handling of certificate data. The issue is limited to configurations using the original ASN.1 parsing implementation which is off by default.
Impacted products
Vendor Product Version
wolfSSL wolfSSL Version: 0    5.9.0
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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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