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CVE-2023-40296

HighPublished

async-sockets-cpp through 0.3.1 has a stack-based buffer overflow in ReceiveFrom and Receive in udpsocket.hpp when processing malformed UDP packets.

Published: Aug 14, 2023
Updated: Oct 9, 2024
Assigning CNA: mitre
Evidence observed: Aug 5, 2026

Primary CVSS

7.5/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

0.9%

Low · next 30 days

Percentile: 57.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

async-sockets-cpp through 0.3.1 has a stack-based buffer overflow in ReceiveFrom and Receive in udpsocket.hpp when processing malformed UDP packets.

Sources

CVE-2023-40296PoC
Proof of Concept for CVE-2023-40296

Responsible use

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