CVE-2026-116540 netty-tcnative 2.0.66.Final before 2.0.84.Final Use-After-Free in Session Ticket Callback
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-116540?
CVE-2026-116540 is a high-severity vulnerability in netty-tcnative, published on 26 Oct 2026.
Official description
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.
Weakness: CWE-416
Which versions are affected by CVE-2026-116540?
How do I fix CVE-2026-116540?
No fix has been published for CVE-2026-116540 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-116540 being exploited?
There is no known exploitation of CVE-2026-116540 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-116540, GHSA-fgcj-53j7-r6vq, GHSA-mmc8-vg2v-fvvw, UBUNTU-CVE-2026-116540.