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VULNERABILITIES

CVE-2026-94450 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: AMZNCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://aws.amazon.com/security/security-bulletins/2026-116-aws/ AMZN
https://github.com/aws/s2n-quic/releases/tag/v1.89.0 AMZN
https://github.com/aws/s2n-quic/security/advisories/GHSA-5rw2-6x5m-v22x AMZN

Weakness Enumeration

CWE-IDCWE NameSource
CWE-1284Improper Validation of Specified Quantity in InputAMZN

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-94450
NVD Published Date:
Sep 22, 2026
NVD Last Modified:
Sep 23, 2026
Source:
AMZN
CVE-2026-94450 Details - Not Deferred