QUIC flood
QUIC handshakes exhaust server resources
categoryNetwork and infrastructure attacksseverityMediumdetectabilityLowlabnot yet measured
Classification
27 values: 14 imported, 1 derived, 12 machine-classified. What do these mean?
Exploitability
| Attack vector | Network attacks |
|---|---|
| Reach (CVSS) | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Attacker skill required | Low |
| Resources required | Medium |
| Likelihood / prevalence | Low |
| Maturity | Emerging |
Impact & scope
| Severity | Medium |
|---|---|
| Impact | Availability |
| Platform | IaaSLinuxmacOSWindows |
| Environment | CloudOn-premises |
| Target asset class | Server |
| Kill-chain phase (tactic) | Impact |
Detection & telemetry
| Detectability | Low |
|---|---|
| Data sources (ATT&CK data components) | Application Log ContentFirewall Rule ModificationHost StatusNetwork Connection CreationNetwork Traffic ContentNetwork Traffic FlowProcess Access |
Detection & response
Mitigated by 12
- M1037 attack-mitigation
D3-APCAd3fendD3-CSPPd3fendD3-ISVAd3fendD3-ITFd3fendD3-NTCDd3fendD3-NTFd3fendD3-NTSAd3fendD3-PHDURAd3fendD3-PMADd3fendD3-RTSDd3fendD3-UGLPAd3fend
Detected by 1
- DET0173 attack-detection-strategy
Attack relationships
- Parent: DoS / DDoS
- Parent: LAND attack
- Parent: Phantom domain
Framework references
- Primary source: https://www.cloudflare.com/learning/ddos/what-is-a-ddos-attack/
- attack: T1499.002 (primary)
- capec: CAPEC-486
Evidence & sources
- ev-0001 (Cyber Attack Taxonomy) — Name, definition and Example/ID taken verbatim from the 'Network and infrastructure attacks' table, line 144 of Cyber-Attack-Taxonomy.md
- ev-0002 (Seeded-record enrichment run 2026-09-30 (crosswalk + facet classification)) — Crosswalk to attack:T1499.002, capec:CAPEC-486 as the nearest framework entries; ids verified to exist in the cached catalogues.
- ev-0003 (CAPEC — Common Attack Pattern Enumeration and Classification 3.9) — CAPEC-486 UDP Flood: CAPEC prerequisites for this pattern
This type of an attack requires the ability to generate a large amount of UDP traffic to send to the desired port of a target service using UDP.