Description
Unbounded memory allocation in the CRYPTO frame reassembler in s2n-quic before 1.8.2 may allow an unauthenticated remote actor to cause a denial of service (degraded availability) by sending crafted QUIC Initial packets.



To remediate this issue, users should upgrade to v1.8.2.
Published: 2026-06-10
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 10 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 10 Jun 2026 19:15:00 +0000

Type Values Removed Values Added
Description Unbounded memory allocation in the CRYPTO frame reassembler in s2n-quic before 1.8.2 may allow an unauthenticated remote actor to cause a denial of service (degraded availability) by sending crafted QUIC Initial packets. To remediate this issue, users should upgrade to v1.8.2.
Title Excessive memory allocation in s2n-quic
First Time appeared Aws
Aws s2n-quic
Weaknesses CWE-770
CPEs cpe:2.3:a:aws:s2n-quic:*:*:*:*:*:*:*:*
Vendors & Products Aws
Aws s2n-quic
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-06-10T19:14:59.133Z

Reserved: 2026-06-03T13:13:46.286Z

Link: CVE-2026-10740

cve-icon Vulnrichment

Updated: 2026-06-10T19:14:32.421Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-10T19:16:32.470

Modified: 2026-06-10T20:19:35.917

Link: CVE-2026-10740

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-11T10:41:06Z

Weaknesses