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Affected Component
Analysis
wolfssl
Exploitable
Name
CVE-2026-5188
Description
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.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://github.com/wolfSSL/wolfssl/pull/10024Issue Tracking
Analysis#
Vulnerability Ratings#
2.3
CVSSv4
8.1
CVSSv31
NaN
other