CVE-2017-1000158

CPython (aka Python) up to 2.7.13 is vulnerable to an integer overflow in the PyString_DecodeEscape function in stringobject.c, resulting in heap-based buffer overflow (and possible arbitrary code execution)

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

7.9% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-25)

CWE

CWE-190

Published

2017-11-17

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• python:python

References

• http://www.securitytracker.com/id/1039890
• https://bugs.python.org/issue30657
• https://lists.debian.org/debian-lts-announce/2017/11/msg00035.html
• https://lists.debian.org/debian-lts-announce/2017/11/msg00036.html
• https://lists.debian.org/debian-lts-announce/2018/09/msg00030.html

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