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Fencer Intel
critical 9.8

CVE-2021-21998 in the critical feed json

VMware Carbon Black App Control 8.0, 8.1, 8.5 prior to 8.5.8, and 8.6 prior to 8.6.2 has an authentication bypass.

published 5y ago modified 4mo ago also EUVD-2021-9168

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.6%
EPSS 10.6% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

VMware Carbon Black App Control 8.0, 8.1, 8.5 prior to 8.5.8, and 8.6 prior to 8.6.2 has an authentication bypass. A malicious actor with network access to the VMware Carbon Black App Control management server might be able to obtain administrative access to the product without the need to authenticate.

Patch / fix

  • vmware carbon_black_app_control 8.5.8, 8.6.2

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Exploit prediction

10.62% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • n/a VMware Carbon Black App Control (AppC)

Classification

Weakness

References

Sources

Fencer Intel 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.