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Vulnerability record · CVE-2016-9189 · published 4 November 2016

CVE-2016-9189: Python pillow integer overflow vulnerability

Python · Pillow

Pillow before 3.3.2 allows context-dependent attackers to obtain sensitive information by using the "crafted image file" approach, related to an "Integer Overflow" issue affecting the Image.core.map_buffer in map.c component.

5.5 CVSS 3.0 Medium EPSS 1.9% · top 21.4% CWE-190 · Integer overflow
5.5CVSS 3.0 base score, v2 4.3
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

Pillow before 3.3.2 allows context-dependent attackers to obtain sensitive information by using the "crafted image file" approach, related to an "Integer Overflow" issue affecting the Image.core.map_buffer in map.c component.

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://pillow.readthedocs.io/en/3.4.x/releasenotes/3.3.2.html Vendor Advisory
http://www.debian.org/security/2016/dsa-3710 Third Party Advisory
http://www.securityfocus.com/bid/94234 Third Party AdvisoryVDB Entry
https://github.com/python-pillow/Pillow/issues/2105 Issue TrackingPatchThird Party Advisory
https://github.com/python-pillow/Pillow/pull/2146/commits/c50ebe6459a131a1ea8ca531f10da616d3ceaa0f Issue TrackingPatchThird Party Advisory
https://security.gentoo.org/glsa/201612-52
http://pillow.readthedocs.io/en/3.4.x/releasenotes/3.3.2.html Vendor Advisory
http://www.debian.org/security/2016/dsa-3710 Third Party Advisory
http://www.securityfocus.com/bid/94234 Third Party AdvisoryVDB Entry
https://github.com/python-pillow/Pillow/issues/2105 Issue TrackingPatchThird Party Advisory
https://github.com/python-pillow/Pillow/pull/2146/commits/c50ebe6459a131a1ea8ca531f10da616d3ceaa0f Issue TrackingPatchThird Party Advisory
https://security.gentoo.org/glsa/201612-52

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Source: NIST National Vulnerability Database (record CVE-2016-9189), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.