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CVE-2026-25667

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9eb1da6060f5a342e0f7cd2847e965da65e59411ecef8f196817567383cce84d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"description":"n/a","lang":"en","type":"text"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:586109f31d4afe20dcab5fbb7b3409406c6c9473ffa1bc4f643a2fca04c3ecca · sha256:5dfd8bf3c99eb874… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:586109f31d4afe20dcab5fbb7b3409406c6c9473ffa1bc4f643a2fca04c3ecca · sha256:5dfd8bf3c99eb874… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:586109f31d4afe20dcab5fbb7b3409406c6c9473ffa1bc4f643a2fca04c3ecca · sha256:5dfd8bf3c99eb874… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:586109f31d4afe20dcab5fbb7b3409406c6c9473ffa1bc4f643a2fca04c3ecca · sha256:5dfd8bf3c99eb874… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"n/a","lang":"en","type":"text"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:586109f31d4afe20dcab5fbb7b3409406c6c9473ffa1bc4f643a2fca04c3ecca · sha256:5dfd8bf3c99eb874… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:586109f31d4afe20dcab5fbb7b3409406c6c9473ffa1bc4f643a2fca04c3ecca · sha256:5dfd8bf3c99eb874… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://github.com/IsaJafarov/Kestrel-DoS"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:586109f31d4afe20dcab5fbb7b3409406c6c9473ffa1bc4f643a2fca04c3ecca · sha256:5dfd8bf3c99eb874… · /containers/cna/references/0
{"url":"https://github.com/IsaJafarov/Q3Fuzz"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:586109f31d4afe20dcab5fbb7b3409406c6c9473ffa1bc4f643a2fca04c3ecca · sha256:5dfd8bf3c99eb874… · /containers/cna/references/2
{"url":"https://github.com/dotnet/aspnetcore/commit/96ccc40a0e095424b19506e8268b9b1a3e23d6a7#diff-667d5b3693f93a0f706ab211428998b210862f9b885d917104d2013118312626"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:586109f31d4afe20dcab5fbb7b3409406c6c9473ffa1bc4f643a2fca04c3ecca · sha256:5dfd8bf3c99eb874… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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