CVE-2021-41581

PoC —

CVSS 3.1

5.5 medium

EPSS

<1%p49

Published

Sep 24, 2021 (Sep 24, 2021)

Modified

Jun 17, 2026

Description

x509_constraints_parse_mailbox in lib/libcrypto/x509/x509_constraints.c in LibreSSL through 3.4.0 has a stack-based buffer over-read. When the input exceeds DOMAIN_PART_MAX_LEN, the buffer lacks '\0' termination.

Vendors: openbsd
Products: libressl
Weakness: CWE-125
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.6%)

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