# Netty TCNative vulnerabilities

Source: https://junglewise.ai/threats/technologies/tcnative  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/tcnative.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 4 vulnerabilities in Netty TCNative: 0 in the last 7 days and 4 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-116542, was published on 26 October 2026. 4 vulnerabilities in the last four weeks, up from none in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 4
- Last 90 days: 4
- All time: 4 (0 critical, 0 exploited in the wild)

## About Netty TCNative

Java library providing native OpenSSL bindings for Netty network framework.

## Latest Netty TCNative vulnerabilities

- [CVE-2026-116542: Netty netty-tcnative SNI hostname spoofing](https://junglewise.ai/threats/cve-2026-116542-netty-netty-tcnative-before-2-0-84-final-contains-an-sni) (medium, CVSS 5.3, published 26 Oct 2026)
- [CVE-2026-116541: Netty netty-tcnative denial of service in BIO write callback](https://junglewise.ai/threats/cve-2026-116541-netty-netty-tcnative-before-2-0-84-final-contains-a-denial-of) (medium, CVSS 5.9, published 26 Oct 2026)
- [CVE-2026-116540: Netty TCNative use-after-free in session ticket key rotation](https://junglewise.ai/threats/cve-2026-116540-netty-tcnative-2-0-66-final-before-2-0-84-final-built-against) (medium, CVSS 5.9, published 26 Oct 2026)
- [CVE-2026-116539: Netty netty-tcnative heap buffer overflow in BIO callback](https://junglewise.ai/threats/cve-2026-116539-netty-netty-tcnative-before-2-0-84-final-contains-a-heap-buffer) (medium, CVSS 5.9, published 26 Oct 2026)

## Most severe Netty TCNative vulnerabilities

- [CVE-2026-116541: Netty netty-tcnative denial of service in BIO write callback](https://junglewise.ai/threats/cve-2026-116541-netty-netty-tcnative-before-2-0-84-final-contains-a-denial-of) (medium, CVSS 5.9, published 26 Oct 2026)
- [CVE-2026-116540: Netty TCNative use-after-free in session ticket key rotation](https://junglewise.ai/threats/cve-2026-116540-netty-tcnative-2-0-66-final-before-2-0-84-final-built-against) (medium, CVSS 5.9, published 26 Oct 2026)
- [CVE-2026-116539: Netty netty-tcnative heap buffer overflow in BIO callback](https://junglewise.ai/threats/cve-2026-116539-netty-netty-tcnative-before-2-0-84-final-contains-a-heap-buffer) (medium, CVSS 5.9, published 26 Oct 2026)
- [CVE-2026-116542: Netty netty-tcnative SNI hostname spoofing](https://junglewise.ai/threats/cve-2026-116542-netty-netty-tcnative-before-2-0-84-final-contains-an-sni) (medium, CVSS 5.3, published 26 Oct 2026)

## Vulnerabilities per week

4 vulnerabilities in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 4 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Netty technologies

- [Netty](https://junglewise.ai/threats/technologies/netty): 25 vulnerabilities
- [Netty-Codec-Http](https://junglewise.ai/threats/technologies/netty-netty-codec-http): 18 vulnerabilities
- [Netty-Handler](https://junglewise.ai/threats/technologies/netty-handler): 5 vulnerabilities
- [Netty Codec HTTP/3](https://junglewise.ai/threats/technologies/codec-http-3): 4 vulnerabilities
- [Netty-Codec-Http3](https://junglewise.ai/threats/technologies/netty-codec-http3): 4 vulnerabilities
- [Netty-Resolver-Dns](https://junglewise.ai/threats/technologies/netty-resolver-dns): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Netty TCNative vulnerabilities", https://junglewise.ai/threats/technologies/tcnative, 9 November 2026.