CVEvulnerability

CVE-2026-94450

8.7 HIGH Published 2026-09-22 Modified 2026-10-20 Official page ↗

Status: Awaiting Analysis
Published: 2026-09-22
Last modified: 2026-10-20
Assigner: ff89ba41-3aa1-4d27-914a-91399e9639e5
CVSS 4.0 (ff89ba41-3aa1-4d27-914a-91399e9639e5): 8.7 HIGH — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 (ff89ba41-3aa1-4d27-914a-91399e9639e5): 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses: CWE-1284, CWE-617

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.

Weakness · CWE (2)

CWE-1284 Improper Validation of Specified Quantity in Input weakness
CWE-617 Reachable Assertion weakness

References

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

CVE-2026-94450

Description

Related

Weakness · CWE (2)

References