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.
INFO
Published Date :
2026-04-10T03:24:21.126Z
Last Modified :
2026-04-10T13:41:51.326Z
Source :
wolfSSL
AFFECTED PRODUCTS
The following products are affected by CVE-2026-5188 vulnerability.
| Vendors | Products |
|---|---|
| Wolfssl |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-5188.
| URL | Resource |
|---|---|
| https://github.com/wolfSSL/wolfssl/pull/10024 |
|
CVSS Vulnerability Scoring System
Detailed values of each vector for above chart.
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