CVE-2020-7216: An ni_dhcp4_parse_response memory leak in openSUSE wicked 0.6.55 and earlier allows network attackers to cause

Q: How do I fix CVE-2020-7216?

wicked: upgrade to newer than 0.6.55; leap: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2020-7216 being exploited?

CVE-2020-7216 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-7216 affect?

CVE-2020-7216 affects wicked, leap. Severity is high (CVSS 7.5). An ni_dhcp4_parse_response memory leak in openSUSE wicked 0.6.55 and earlier allows network attackers to cause a denial of service by sending DHCP4 packets without a message type option.

Q: How urgent is CVE-2020-7216?

Priority 48/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADEMITIGATE

CVE-2020-7216 is a high-severity flaw (CVSS 7.5) affecting wicked, leap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An ni_dhcp4_parse_response memory leak in openSUSE wicked 0.6.55 and earlier allows network attackers to cause a denial of service by sending DHCP4 packets without a message type option.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-401
Published	2020-02-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: opensuse

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-02-05 15:15 UTCPublished CVE record published
2026-06-17 03:24 UTCUpdated Record last modified

opensuse wicked UPGRADE

Affected: <= 0.6.55

Fixed in: newer than 0.6.55

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wicked || rpm -q wicked || wicked --version

2. UPGRADE to newer than 0.6.55 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wicked

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wicked

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

opensuse leap MITIGATE

Affected: 15.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.1

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-7216?

wicked: upgrade to newer than 0.6.55; leap: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-7216 being exploited?

CVE-2020-7216 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-7216 affect?

CVE-2020-7216 affects wicked, leap. Severity is high (CVSS 7.5). An ni_dhcp4_parse_response memory leak in openSUSE wicked 0.6.55 and earlier allows network attackers to cause a denial of service by sending DHCP4 packets without a message type option.

How urgent is CVE-2020-7216?

Priority 48/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-7217 HIGH 7.5 UPGRADE An ni_dhcp4_fsm_process_dhcp4_packet memory leak in openSUSE wicked 0.6.55 and earlier allows network attacker
CVE-2013-4413 MEDIUM 5.0 UPGRADE Directory traversal vulnerability in controller/concerns/render_redirect.rb in the Wicked gem before 1.0.1 for

References

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