CVE-2026-116541

Netty netty-tcnative before 2.0.84.Final contains a denial of service vulnerability in the tcn_write_to_bytebuffer BIO write callback that overreports bytes consumed. Remote TLS 1.3 peers can provoke queued post-handshake records like NewSessionTicket or KeyUpdate to truncate flights, fail connections, or abort the JVM process.

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/ssl.c#L240
https://github.com/netty/netty-tcnative/commit/e31df4a5885b35085fdfa3e2dca7c1f705d4745b
https://github.com/netty/netty-tcnative/releases/tag/netty-tcnative-parent-2.0.84.Final
https://github.com/netty/netty-tcnative/security/advisories/GHSA-9xr3-jwv4-r489
https://www.vulncheck.com/advisories/netty-tcnative-before-2.0.84-final-denial-of-service-via-bio-write-overcount

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 20:17

NVD link : CVE-2026-116541

Mitre link : CVE-2026-116541

CVE.ORG link : CVE-2026-116541

JSON object : View

Products Affected

No product.

CWE

CWE-682

Incorrect Calculation

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