PT-2026-48517 · Aws · S2N-Quic

Published 2026-06-10 · Updated 2026-06-10 · CVE-2026-10740

Mitre

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2026-10740

Affected Products

S2N-Quic

References · 4

• https://github.com/aws/s2n-quic/releases/tag/v1.82.0 · Patch
• https://aws.amazon.com/security/security-bulletins/2026-042-aws · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-10740 · Security Note
• https://github.com/aws/s2n-quic/security/advisories/GHSA-9q54-f358-3fqf · Note