What is CVE-2023-38632?

CVE-2023-38632 is a critical-severity vulnerability in Asynchronous Sockets For C\+\+ Project, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-07-21.

How severe is CVE-2023-38632?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-38632 known to be exploited?

6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Asynchronous Sockets For C\+\+ Project

CVE-2023-38632

async-sockets-cpp through 0.3.1 has a stack-based buffer overflow in tcpsocket.hpp when processing malformed TCP packets.

Vulnerability class: Buffer Overflow

Published 2023-07-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.019 (78.8th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Asynchronous Sockets For C\+\+ Project

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

References

github.com/eminfedar/async-sockets-cpp/issues/31 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2023-38632?: CVE-2023-38632 is a critical-severity vulnerability in Asynchronous Sockets For C\+\+ Project, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-07-21.
How severe is CVE-2023-38632?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-38632 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.