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Fencer Vulns
high 8.8

CVE-2021-27660 json

C-CURE 9000

published 2021-07-01 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14406

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

An insecure client auto update feature in C-CURE 9000 can allow remote execution of lower privileged Windows programs.

Patch / fix

  • Johnson Controls C-CURE 9000 2.80

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-182-02 updated cvss 8.8

Sensormatic Electronics C-CURE 9000 (Update A)

  • Sensormatic Electronics, LLC, Johnson Controls Inc. C-CURE 9000 < 2.80
    affected: fixed in 2.80, mitigation “Versions prior to 2.60” johnsoncontrols.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

2.10% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/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

  • Johnson Controls C-CURE 9000

Classification

Weakness
  • CWE-20 Improper Input Validation

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.