CVE-2026-42772
NVD: Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. NVD: The worst case has a quadratic complexity proportional to the number of stream frames kept in the buffer for the received stream data. NVD: Impact summary: A remote QUIC peer that completes the handshake can create a connection-scoped CPU pressure and potentially a Denial of Service using compliant STREAM frames inside the advertised receive window, with low attacker bandwidth.
5.3 Severity
MEDIUM EPSS
0.0033 (24) KEV
-
Source-published summary
NVD: Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. NVD: The worst case has a quadratic complexity proportional to the number of stream frames kept in the buffer for the received stream data. NVD: Impact summary: A remote QUIC peer that completes the handshake can create a connection-scoped CPU pressure and potentially a Denial of Service using compliant STREAM frames inside the advertised receive window, with low attacker bandwidth.
Possible impact
Source describes service availability risk. Possible impact: The affected service may become unavailable or unreliable.
Affected context
Affected product or version requires source confirmation.
Remediation / advisory
Remediation reference present; patch status requires confirmation in the linked advisory.
Why it matters
Source describes service availability risk. Possible impact: The affected service may become unavailable or unreliable.; CVSS 5.3 (MEDIUM); EPSS percentile 24; not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD, OSV.
What to verify
Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.
Exposure hint
exposure unknown
Impact tags
Urgency reasons
Source-derived note
Summary derived from NVD / OSV description; unsafe procedural detail is not shown.
Redaction metadata
- source summary used
- True
- fallback summary used
- False
- unsafe procedural detail present
- false
- raw source displayed
- false
- public summary redacted
- true
Remediation handoff
Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.
Safety note
This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.