CVE-2016-4009: python pillow
Vulnerability summary
CVE-2016-4009 is a high (CVSS 10.0) vulnerability in python pillow. EPSS estimates a 7.87% chance of exploitation in the next 30 days, higher than 94.7% of scored vulnerabilities.
Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 8% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 13-04-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
6 scores · 4 sources · 3 versions- OSV · PypiEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
7.87%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
No change 0.00 pp
From 7.87% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- pillow< 3.1.1-1
PyPI1 product
- pillow< 4e0d9b0b9740d258ade40cce248c93777362ac1e | < 3.1.1
Python1 product
- pillow≤ 3.1.0
Ubuntu1 product
- pillow< 3.1.1-1
4 vendors · 4 products
References
12 links- github.com/python-pillow/Pillow/commit/4e0d9b0b9740d258ade40cce248c93777362ac1eX Refsource CONFIRMPatchWEBFIX
- github.com/python-pillow/Pillow/blob/c3cb690fed5d4bf0c45576759de55d054916c165/CHANGES.rstX Refsource CONFIRMPatchVendor AdvisoryWEBREPORT
