Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://aws.amazon.com/security/security-bulletins/2026-042-aws/
- https://github.com/aws/s2n-quic/releases/tag/v1.82.0
- https://github.com/aws/s2n-quic/security/advisories/GHSA-9q54-f358-3fqf
FAQ
What is CVE-2026-10740?
CVE-2026-10740 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 Q...
How severe is CVE-2026-10740?
CVE-2026-10740 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-10740?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.