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CVE-2021-20297

19
FAUCET Score

CVE-2021-20297 is a medium-severity flaw in NetworkManager versions prior to 1.30.0, affecting products like Fedora, GNOME, and Red Hat. This vulnerability allows a local, low-privileged attacker to crash NetworkManager by manipulating match.path settings and activating a profile, leading to a denial of service. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the potential for system unavailability warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.30.0CPE matchmatch criteria
cpe:2.3:a:gnome:networkmanager:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
17.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 70th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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 (4)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libnma-0:1.8.30-2.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: NetworkManager-1:1.30.0-7.el8
View patch
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: NetworkManager

Vendor Advisories (1)

redhatCVE-2021-20297Moderate

NetworkManager: Profile with match.path setting triggers crash

Mar 25, 2021

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory