CVE-2018-1000117: Python

Medium severity, CVSS 6.7. EPSS: 1% chance of exploitation in the next 30 days.

Python Software Foundation CPython version From 3.2 until 3.6.4 on Windows contains a Buffer Overflow vulnerability in os.symlink() function on Windows that can result in Arbitrary code execution, likely escalation of privilege. This attack appears to be exploitable via a python script that creates a symlink with an attacker controlled name or location. This vulnerability appears to have been fixed in 3.7.0 and 3.6.5.

Affected products

• Python Python: from 3.2.0, before 3.4.9 (fixed in 3.4.9); from 3.5.0, before 3.5.6 (fixed in 3.5.6); from 3.6.0, before 3.6.5 (fixed in 3.6.5); version 3.7.0 only

Published 2018-03-07. Last modified 2026-06-17.