CVE-2026-116540

netty-tcnative 2.0.66.Final before 2.0.84.Final built against OpenSSL 3.x contains a use-after-free vulnerability in ssl_tlsext_ticket_key_cb during session ticket key rotation. Remote clients performing TLS handshakes while setSessionTicketKeys0 frees the shared key array cause OpenSSL to read freed HMAC keys, crashing or corrupting ticket processing.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/netty/netty-tcnative
https://github.com/netty/netty-tcnative/blob/netty-tcnative-parent-2.0.83.Final/openssl-dynamic/src/main/c/sslcontext.c#L1365
https://github.com/netty/netty-tcnative/commit/59662a8b07a9a7623ae1bc472f5751f31c81a118
https://github.com/netty/netty-tcnative/releases/tag/netty-tcnative-parent-2.0.84.Final
https://github.com/netty/netty-tcnative/security/advisories/GHSA-mmc8-vg2v-fvvw
https://www.vulncheck.com/advisories/netty-tcnative-2.0.66-final-before-2.0.84-final-use-after-free-in-session-ticket-callback

Configurations

No configuration.

History

26 Oct 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-26 16:17

Updated : 2026-10-26 17:17

NVD link : CVE-2026-116540

Mitre link : CVE-2026-116540

CVE.ORG link : CVE-2026-116540

JSON object : View

Products Affected

No product.

CWE

CWE-416

Use After Free

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