CVE-2026-5772

A 1-byte stack buffer over-read was identified in the MatchDomainName function (src/internal.c) during wildcard hostname validation when the LEFT_MOST_WILDCARD_ONLY flag is active. If a wildcard * exhausts the entire hostname string, the function reads one byte past the buffer without a bounds check, which could cause a crash.

Score

CVSS 3.1 5.3 Medium

Status

Analyzed - facts@wolfssl.com

Published

2026-04-09

Last modified

2026-04-10

Weaknesses

CWE-126

Affected products

• Wolfssl (Wolfssl)

References

• https://github.com/wolfSSL/wolfssl/pull/10119