CVE-2026-5393 PUBLISHED

OOB Read in DoTls13CertificateVerify with WOLFSSL_DUAL_ALG_CERTS

Assigner: wolfSSL
Reserved: 01.04.2026 Published: 09.04.2026 Updated: 10.04.2026

Dual-Algorithm CertificateVerify out-of-bounds read. When processing a dual-algorithm CertificateVerify message, an out-of-bounds read can occur on crafted input. This can only occur when --enable-experimental and --enable-dual-alg-certs is used when building wolfSSL.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
CVSS Score: 6.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	Present	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	wolfSSL
Product	wolfSSL
Versions	Default: unaffected affected from 0 to 5.9.1 (excl.)

Credits

Sunwoo Lee, (Korea Institute of Energy Technology, KENTECH) for testing other
Woohyun Choi, (Korea Institute of Energy Technology, KENTECH) for testing other
Seunghyun Yoon, (Korea Institute of Energy Technology, KENTECH) for testing other

References

https://github.com/wolfSSL/wolfssl/pull/10079

Problem Types

CWE-125 Out-of-bounds Read CWE