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CVE-2021-20578

29
FAUCET Score

CVE-2021-20578 is a critical vulnerability affecting IBM Cloud Pak for Security versions 1.7.0.0 through 1.8.0.0, and related Red Hat OpenShift deployments, stemming from improper or missing authentication controls. With a CVSS score of 9.8 (CRITICAL), this network-exploitable flaw allows an unauthenticated attacker to perform unauthorized actions, leading to complete compromise of confidentiality, integrity, and availability. While no public exploit code (Metasploit, Nuclei, ExploitDB) or active exploitation (KEV) has been observed, and community discussion is minimal, its high FAUCET Risk Score of 76/100 indicates significant potential danger.

Impacted Technologies

VendorProductVersion(s)CPE
1.7.0.0CPE matchmatch criteria
cpe:2.3:a:ibm:cloud_pak_for_security:1.7.0.0:*:*:*:*:*:*:*
1.7.1.0CPE matchmatch criteria
cpe:2.3:a:ibm:cloud_pak_for_security:1.7.1.0:*:*:*:*:*:*:*
1.7.2.0CPE matchmatch criteria
cpe:2.3:a:ibm:cloud_pak_for_security:1.7.2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.99%
Probability of exploitation in next 30 days
EPSS Percentile
58.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0099 is in the 44th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/199282
VDB EntryVendor Advisory
ibm.com / support/pages/node/6493729
PatchVendor Advisory