CVE-2026-15442

In all builds that make use of (D)TLS, including default builds, there is a series of conditional states during the TLS shutdown which could lead to a heap-use-after free. If an application ended up getting a partial wolfSSL_read() which is sometimes caused by a small user buffer passed in, then called wolfSSL_shutdown for a bidirectional close and attempted to wolfSSL_read() again while the peer continues trying to send data during the shutdown it would lead to a state where a potential heap-use-after free happened.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/wolfSSL/wolfssl/pull/10863	Issue Tracking

Configurations

Configuration 1 (hide)

cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*

History

02 Oct 2026, 18:58

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.3
First Time		Wolfssl wolfssl Wolfssl
CPE		cpe:2.3:a:wolfssl:wolfssl::::::::
References	~~() https://github.com/wolfSSL/wolfssl/pull/10863 -~~	() https://github.com/wolfSSL/wolfssl/pull/10863 - Issue Tracking

27 Sep 2026, 10:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-27 10:16

Updated : 2026-10-02 18:58

NVD link : CVE-2026-15442

Mitre link : CVE-2026-15442

CVE.ORG link : CVE-2026-15442

JSON object : View

Products Affected

wolfssl

wolfssl

CWE

CWE-416

Use After Free

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