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Fencer Vulns
critical 9.8

CVE-2016-4009 json

Pillow Integer overflow in ImagingResampleHorizontal

published 2016-04-13 10 y ago modified 2026-06-17 4 mo ago also GHSA-hvr8-466p-75rh , PYSEC-2016-7 , EUVD-2016-0023

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.9%
EPSS 7.9% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

Integer overflow in the ImagingResampleHorizontal function in libImaging/Resample.c in Pillow before 3.1.1 allows remote attackers to have unspecified impact via negative values of the new size, which triggers a heap-based buffer overflow.

Patch / fix

  • pypi pillow 3.1.1
  • pillow Debian 14, Debian 13, Debian 12 3.1.1-1

debian advisories DEBIAN-CVE-2016-4009

  • python-Pillow Enterprise Storage 5 2.8.1-3.6.1
  • python-Pillow OpenStack Cloud 7, Enterprise Storage 4 2.8.1-4.9.1

suse advisories SUSE-SU-2020:1194-1SUSE-SU-2019:2334-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-4009 updated cvss 4.3

python-pillow: integer overflow in the ImagingResampleHorizontal function

  • Red Hat Enterprise Linux 5 python-imaging Red Hat Enterprise Linux 6 python-imaging, python-imaging-tk, python-imaging-sane Red Hat Enterprise Linux 7 python-pillow, python-pillow-qt, python-pillow-tk, python-pillow-sane
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

7.87% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C
GitHub 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi pillow
<3.1.1
3.1.1

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.