CVE-2026-5772 | THREATINT

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Description

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.

PUBLISHED Reserved 2026-04-08 | Published 2026-04-09 | Updated 2026-04-09 | Assigner wolfSSL

LOW: 2.1CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-126 Buffer over-read

Product status

Default status
unaffected

Any version
affected

Credits

Zou Dikai finder

References

github.com/wolfSSL/wolfssl/pull/10119

cve.org (CVE-2026-5772)

nvd.nist.gov (CVE-2026-5772)

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