ASP.NET Core Kestrel in Microsoft .NET 8.0 before 8.0.22 and .NET 9.0 before 9.0.11 allows a remote attacker to cause excessive CPU consumption by sending a crafted QUIC packet, because of an incorrect exit condition for HTTP/3 Encoder/Decoder stream processing.
{
"cna_assigner": "mitre",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25667.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.0.22"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.0.0"
},
{
"fixed": "9.0.11"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "96ccc40a0e095424b19506e8268b9b1a3e23d6a7"
}
],
"source": "REFERENCES_COMMIT"
}
]
}