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CVE-2019-18874

26
FAUCET Score

CVE-2019-18874 describes a double free vulnerability in psutil (aka python-psutil) versions through 5.6.5, stemming from reference count mishandling during the conversion of system data to Python objects. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a severe impact, specifically a high availability impact (A:H) with no confidentiality or integrity impact, and can be exploited remotely with low attack complexity and no user interaction required. Despite its high severity, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage, suggesting it is not currently a widely targeted threat.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.6.5CPE matchmatch criteria
cpe:2.3:a:psutil_project:psutil:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.52%
Probability of exploitation in next 30 days
EPSS Percentile
88.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0352 is in the 79th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (35)

microsoftpatch availablevia msrc
Product: cm1 python-psutil 5.6.7-1 on CBL Mariner 1.0Fixed in: 5.6.7-1
microsoftpatch availablevia msrc
Product: 17033-16820Fixed in: 5.6.7-1
microsoftpatch availablevia msrc
Product: 17034-16823Fixed in: 5.9.0-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 5.9.0-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 5.9.0-1
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 5.6.7-1
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 5.6.7-1
microsoftpatch availablevia msrc
Product: cbl2 python-psutil 5.9.0-1 on CBL Mariner 2.0Fixed in: 5.9.0-1
pippatch availablevia ghsa
Product: psutilFixed in: 5.6.6
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.2Fixed in: python-psutil-0:5.6.6-1.el7ar
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.3Fixed in: python-psutil-0:5.6.6-1.el7ar
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.4Fixed in: python-psutil-0:5.6.6-1.el7ar
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.9 for RHEL 7Fixed in: python-psutil-0:5.7.2-2.el7sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-python38-python-0:3.8.6-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-python38-python-psutil-0:5.6.4-5.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-python38-python-urllib3-0:1.25.7-6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-python38-python-0:3.8.6-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-python38-python-psutil-0:5.6.4-5.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-python38-python-urllib3-0:1.25.7-6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-python38-python-0:3.8.6-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-python38-python-psutil-0:5.6.4-5.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-python38-python-urllib3-0:1.25.7-6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: python-psutil-0:5.4.3-11.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: python38-devel:3.8-8050020210811101222.e3d35cca
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: python38:3.8-8050020210811101222.e3d35cca
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Tower 3.7 for RHEL 7Fixed in: ansible-tower-37/ansible-tower-rhel7:3.7.4-1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Tower 3.7 for RHEL 7Fixed in: ansible-tower-37/ansible-runner-rhel7:1.4.6-2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Tower 3.6 for RHEL 7Fixed in: ansible-tower-36/ansible-runner-rhel7:1.4.4-2
View patch
redhatno patchvia redhat_api
Product: Red Hat Quay 3Fixed in: python-psutil
redhatend of lifevia redhat_api
Product: CloudForms Management Engine 5Fixed in: python-psutil
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 10 (Newton)Fixed in: python-psutil
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 13 (Queens)Fixed in: python-psutil
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 14 (Rocky)Fixed in: python-psutil
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 15 (Stein)Fixed in: python-psutil
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 16.1Fixed in: python-psutil

Vendor Advisories (4)

microsoft2021-Jul/CVE-2019-18874

CVE-2019-18874

Jul 13, 2021
pipGHSA-qfc5-mcwq-26q8high

Double Free in psutil

Mar 12, 2020
microsoft2019-Nov/CVE-2019-18874Important

psutil (aka python-psutil) through 5.6.5 can have a double free. This occurs because of refcount mishandling within a while or for loop that converts system data into a Python object.

Nov 12, 2019
redhatCVE-2019-18874Moderate

python-psutil: Double free because of refcount mishandling

Nov 7, 2019

References

github.com / giampaolo/psutil/pull/1616
Third Party Advisory
lists.debian.org / debian-lts-announce/2019/11/msg00018.html
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/2P7QI7MOTZTFXQYU23CP3RAWXCERMOAS
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/OLETTJYZL2SMBUI4Q2NGBMGPDPP54SRG
usn.ubuntu.com / 4204-1