Answer in brief
CVE-2026-116541 records a High severity (CVSS 8.2) vulnerability in netty-tcnative before 2.0.84.Final Denial of Service via BIO Write Overcount. The current sources do not mark it as known exploited. The current feed maps netty/io.netty:netty-tcnative (generic), netty/io.netty:netty-tcnative-boringssl-static (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps netty/io.netty:netty-tcnative (generic), netty/io.netty:netty-tcnative-boringssl-static (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| netty/io.netty:netty-tcnativegeneric | >=0 <2.0.84.Final | 2.0.84.Final |
| netty/io.netty:netty-tcnative-boringssl-staticgeneric | >=0 <2.0.84.Final | 2.0.84.Final |
Published upstream
Oct 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 26, 2026
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.
Quoted source text, attributed separately from HOL analysis.