Improper validation of the Destination Connection ID length in s2n-quic 1.88.0 and earlier may allow an unauthenticated remote user to cause a denial of service by shutting down a server endpoint via a single crafted UDP datagram. Only server endpoints specifically configured to send Retry packets are affected.
To remediate this issue, users should upgrade to version v1.89.0 or later.
To remediate this issue, users should upgrade to version v1.89.0 or later.
Metrics
Affected Vendors & Products
Advisories
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Fixes
Solution
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Workaround
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References
History
Tue, 22 Sep 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Improper validation of the Destination Connection ID length in s2n-quic 1.88.0 and earlier may allow an unauthenticated remote user to cause a denial of service by shutting down a server endpoint via a single crafted UDP datagram. Only server endpoints specifically configured to send Retry packets are affected. To remediate this issue, users should upgrade to version v1.89.0 or later. | |
| Title | Potential denial of service when configured to send Retry packets in s2n-quic | |
| First Time appeared |
Aws
Aws s2n-quic |
|
| Weaknesses | CWE-1284 | |
| CPEs | cpe:2.3:a:aws:s2n-quic:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Aws
Aws s2n-quic |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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MITRE
Status: PUBLISHED
Assigner: AMZN
Published:
Updated: 2026-09-22T20:05:59.298Z
Reserved: 2026-09-21T16:50:04.257Z
Link: CVE-2026-94450
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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Weaknesses