CVE-2021-27661

Published on: 07/01/2021 12:00:00 AM UTC

Last Modified on: 07/07/2021 08:28:38 PM UTC

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Certain versions of F4-snc from Johnsoncontrols contain the following vulnerability:

Successful exploitation of this vulnerability could give an authenticated Facility Explorer SNC Series Supervisory Controller (F4-SNC) user an unintended level of access to the controller’s file system, allowing them to access or modify system files by sending specifically crafted web messages to the F4-SNC.

  • CVE-2021-27661 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.
  • Affected Vendor/Software: URL Logo Johnson Controls - Facility Explorer SNC Series Supervisory Controllers (F4-SNC) version = 11

CVSS3 Score: 8.8 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW LOW NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 6.5 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK LOW SINGLE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags Link
Product Security Advisories www.johnsoncontrols.com
text/html
URL Logo CONFIRM www.johnsoncontrols.com/cyber-solutions/security-advisories
ICS-CERT Advisories | CISA us-cert.gov
text/html
URL Logo CERT ICS-CERT Advisory
Johnson Controls Facility Explorer | CISA us-cert.cisa.gov
text/html
URL Logo CERT ICS-CERT Advisory

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
HardwareJohnsoncontrolsF4-snc-AllAllAll
Operating
System
JohnsoncontrolsF4-snc Firmware11AllAllAll
  • cpe:2.3:h:johnsoncontrols:f4-snc:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:johnsoncontrols:f4-snc_firmware:11:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-27661 : Successful exploitation of this vulnerability could give an authenticated Facility Explorer SNC Se… twitter.com/i/web/status/1… 2021-07-01 14:03:32
Reddit Logo Icon /r/netcve CVE-2021-27661 2021-07-01 14:41:23
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