Unrated severityOSV Advisory· Published Jan 19, 2026· Updated Jan 20, 2026
Quicly has assertion failures
CVE-2025-61684
Description
Quicly, an IETF QUIC protocol implementation, is susceptible to a denial-of-service attack prior to commit d9d3df6a8530a102b57d840e39b0311ce5c9e14e. A remote attacker can exploit these bugs to trigger an assertion failure that crashes process using Quicly. Commit d9d3df6a8530a102b57d840e39b0311ce5c9e14e fixes the issue.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- github.com/h2o/quicly/commit/d9d3df6a8530a102b57d840e39b0311ce5c9e14emitrex_refsource_MISC
- github.com/h2o/quicly/security/advisories/GHSA-wr3c-345m-43v9mitrex_refsource_CONFIRM
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