CVE-2026-116539
HIGH
8,2
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM
5,9
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Description
Netty netty-tcnative before 2.0.84.Final contains a heap buffer overflow vulnerability in the tcn_write_to_bytebuffer BIO callback caused by failing to wrap the non-application ring buffer write index. Remote TLS peers can drive handshake, renegotiation, or post-handshake messages into this buffer, triggering an out-of-bounds memcpy that crashes the JVM process.
787
Out-of-bounds Write
DraftCommon Consequences
Security Scopes Affected:
Integrity
Availability
Other
Potential Impacts:
Modify Memory
Execute Unauthorized Code Or Commands
Dos: Crash, Exit, Or Restart
Unexpected State
Applicable Platforms
Languages:
Memory-Unsafe, C, C++, Assembly
Technologies:
ICS/OT
https://github.com/netty/netty-tcnative
https://github.com/netty/netty-tcnative/blob/netty-tcnative-parent-2.0.83.Final…
https://github.com/netty/netty-tcnative/commit/92dd66fd1243d85c05a61288f96367a7…
https://github.com/netty/netty-tcnative/releases/tag/netty-tcnative-parent-2.0.…
https://github.com/netty/netty-tcnative/security/advisories/GHSA-gf9q-9mg7-g5qh
https://www.vulncheck.com/advisories/netty-netty-tcnative-before-2.0.84-final-h…