CVE-2026-10740 | THREATINT

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 Reserved 2026-06-03 | Published 2026-06-10 | Updated 2026-06-10 | Assigner AMZN

MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-770: Allocation of Resources Without Limits or Throttling

Product status

Default status

unaffected

Any version

affected

References

github.com/aws/s2n-quic/releases/tag/v1.82.0 patch

aws.amazon.com/security/security-bulletins/2026-042-aws/ vendor-advisory

github.com/...n-quic/security/advisories/GHSA-9q54-f358-3fqf third-party-advisory

cve.org (CVE-2026-10740)

nvd.nist.gov (CVE-2026-10740)

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