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Fencer Vulns
high 8.8

CVE-2021-20423 json

IBM Cloud Pak for Applications 4.3 could allow an authenticated user gain escalated privilesges due to improper application permissions.

published 2021-07-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-7841

cvss
8.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

IBM Cloud Pak for Applications 4.3 could allow an authenticated user gain escalated privilesges due to improper application permissions. IBM X-Force ID: 196308.

Patch / fix

  • ibm cloud_pak_for_applications 4.3.1

Exploit prediction

1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 8.8 CVSS:3.0/A:H/AC:L/I:H/UI:N/PR:L/C:H/AV:N/S:U/RL:O/E:U/RC:C
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

  • IBM Cloud Pak for Applications

Classification

Weakness
  • CWE-732 Incorrect Permission Assignment for Critical Resource

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.