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CVE-2021-38900

23
FAUCET Score

CVE-2021-38900 is an improper access control vulnerability affecting IBM Business Process Manager and IBM Business Automation Workflow versions 8.5, 8.6, 18.0, 19.0, 20.0, and 21.0. A privileged user could exploit this flaw to gain unauthorized access to highly sensitive information. With a CVSS score of 6.5 (Medium), this network-exploitable vulnerability has low attack complexity and requires low privileges, leading to a high confidentiality impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
18.0.0.0CPE matchmatch criteria
cpe:2.3:a:ibm:business_automation_workflow:18.0.0.0:*:*:*:*:*:*:*
18.0.0.1CPE matchmatch criteria
cpe:2.3:a:ibm:business_automation_workflow:18.0.0.1:*:*:*:*:*:*:*
18.0.0.2CPE matchmatch criteria
cpe:2.3:a:ibm:business_automation_workflow:18.0.0.2:*:*:*:*:*:*:*
19.0.0.0CPE matchmatch criteria
cpe:2.3:a:ibm:business_automation_workflow:19.0.0.0:*:*:*:*:*:*:*
19.0.0.1CPE matchmatch criteria
cpe:2.3:a:ibm:business_automation_workflow:19.0.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.13%
Probability of exploitation in next 30 days
EPSS Percentile
63.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0113 is in the 77th percentile among its peer group of 21,974 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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 0.0 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/209607
VDB EntryVendor Advisory
ibm.com / support/pages/node/6527776
PatchVendor Advisory
ibm.com / support/pages/node/6528296
Vendor Advisory