CVE-2026-5713 MEDIUM

CVE-2026-5713: Out-of-bounds read/write during remote profiling and asyncio process introspection when connecting to malicious target

Vendor Python Software Foundation
Product CPython
Weakness CWE-121
Published April 14, 2026
Last update June 10, 2026

CVSS base score

5.3/10
Attack vector Local
Attack complexity High
Privileges required High
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

The "profiling.sampling" module (Python 3.15+) and "asyncio introspection capabilities" (3.14+, "python -m asyncio ps" and "python -m asyncio pstree") features could be used to read and write addresses in a privileged process if that process connected to a malicious or "infected" Python process via the remote debugging feature. This vulnerability requires persistently and repeatedly connecting to the process to be exploited, even after the connecting process crashes with high likelihood due to ASLR.

Key dates

02Disclosure timeline

April 14, 2026 CVE published
June 10, 2026 Record updated