Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server.
h2oai
Records53All Threatist records
Exploited (KEV)0None in CISA KEV
CVSS critical10CVSS 9.0–10.0
CVSS high28CVSS 7.0–8.9
Exploited now
h2oai records in CISA KEVNo h2oai vulnerabilities are listed in CISA KEV.
Components
Products in the NVD configurations · select one to filter the recordsRecords
5 records in Quicly · all components
Priority LOW 39
TI-2026-32376 CVE-2026-44435
Quicly: Remote Denial of Service via assertion failure when CRYPTO stream handshake data exceeds 32KB
Priority LOW 39
Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server.
TI-2026-32374 CVE-2026-44433
Quicly is vulnerable to memory exhaustion
Priority LOW 39
Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server.
TI-2025-38115 CVE-2025-61684
Quicly has assertion failures
Priority LOW 39
Quicly, an IETF QUIC protocol implementation, is susceptible to a denial-of-service attack prior to commit d9d3df6a8530a102b57d840e39b0311ce5c9e14e.
Priority LOW 29
Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server.