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CVE-2021-3020

28
FAUCET Score

CVE-2021-3020 describes a privilege escalation vulnerability in ClusterLabs Hawk (HA Web Konsole) through version 2.3.0-15. The flaw allows a low-privileged hacluster user to execute an interactive shell via the hawk_invoke binary, bypassing intended command restrictions and achieving root access. This vulnerability carries a CVSS score of 8.8 (High), indicating a network-exploitable, low-complexity attack with high impact on confidentiality, integrity, and availability. Currently, there is no public exploit intelligence, active exploitation, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.3.0-15CPE matchmatch criteria
cpe:2.3:a:clusterlabs:hawk:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.99%
Probability of exploitation in next 30 days
EPSS Percentile
59.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0099 is in the 55th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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 (1)

github_advisorypatch availablevia nvd_reference
View patch

References

bugzilla.suse.com / show_bug.cgi
Permissions Required
github.com / ClusterLabs/crmsh/commit/c538024b8ebd138dc373b005189471d9b77e9c82
PatchThird Party Advisory
github.com / ClusterLabs/hawk/releases
Release NotesThird Party Advisory