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Vulnerability record · CVE-2019-6446 · published 16 January 2019

CVE-2019-6446: Numpy deserialization of untrusted data vulnerability

Numpy · Numpy

An issue was discovered in NumPy before 1.16.3. It uses the pickle Python module unsafely, which allows remote attackers to execute arbitrary code via a crafted serialized object, as demonstrated by a numpy.load call. NOTE: third parties dispute this issue because it is a behavior that might have legitimate applications in (for example) loading serialized Python object arrays from trusted and authenticated sources.

9.8 CVSS 3.0 Critical EPSS 18% · top 3.0% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.0 base score, v2 7.5
18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
21References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered in NumPy before 1.16.3. It uses the pickle Python module unsafely, which allows remote attackers to execute arbitrary code via a crafted serialized object, as demonstrated by a numpy.load call. NOTE: third parties dispute this issue because it is a behavior that might have legitimate applications in (for example) loading serialized Python object arrays from trusted and authenticated sources.

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

Affected products

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

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00091.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00092.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00015.html
http://www.securityfocus.com/bid/106670 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:3335
https://access.redhat.com/errata/RHSA-2019:3704
https://bugzilla.suse.com/show_bug.cgi?id=1122208 ExploitIssue TrackingThird Party Advisory
https://github.com/numpy/numpy/commit/89b688732b37616c9d26623f81aaee1703c30ffb
https://github.com/numpy/numpy/issues/12759 ExploitIssue TrackingThird Party Advisory
https://github.com/numpy/numpy/pull/12889
https://github.com/numpy/numpy/pull/13359
https://lists.fedoraproject.org/archives/list/[email protected]/message/7ZZAYIQNUUYXGMKHSPEEXS4TR
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00091.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00092.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00015.html
http://www.securityfocus.com/bid/106670 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2019:3335
https://access.redhat.com/errata/RHSA-2019:3704
https://bugzilla.suse.com/show_bug.cgi?id=1122208 ExploitIssue TrackingThird Party Advisory
https://github.com/numpy/numpy/issues/12759 ExploitIssue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ZZAYIQNUUYXGMKHSPEEXS4

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Source: NIST National Vulnerability Database (record CVE-2019-6446), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.