Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2021-31340

Disclosure Date: June 08, 2021 •
CVE-2021-31340 CVSS v3 Base Score: 7.5
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Description

A vulnerability has been identified in SIMATIC RF166C (All versions > V1.1 and < V1.3.2), SIMATIC RF185C (All versions > V1.1 and < V1.3.2), SIMATIC RF186C (All versions > V1.1 and < V1.3.2), SIMATIC RF186CI (All versions > V1.1 and < V1.3.2), SIMATIC RF188C (All versions > V1.1 and < V1.3.2), SIMATIC RF188CI (All versions > V1.1 and < V1.3.2), SIMATIC RF360R (All versions < V2.0), SIMATIC Reader RF610R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF610R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF610R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF615R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF615R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF615R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF650R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF650R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF650R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF680R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF680R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF680R FCC (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ARIB (All versions > V3.0 < V4.0), SIMATIC Reader RF685R CMIIT (All versions > V3.0 < V4.0), SIMATIC Reader RF685R ETSI (All versions > V3.0 < V4.0), SIMATIC Reader RF685R FCC (All versions > V3.0 < V4.0). Affected devices do not properly handle large numbers of incoming connections. An attacker may leverage this to cause a Denial-of-Service situation.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
SIMATIC RF166C All versions > V1.1 and < V1.3.2
SIMATIC RF185C All versions > V1.1 and < V1.3.2
SIMATIC RF186C All versions > V1.1 and < V1.3.2
SIMATIC RF186CI All versions > V1.1 and < V1.3.2
SIMATIC RF188C All versions > V1.1 and < V1.3.2
SIMATIC RF188CI All versions > V1.1 and < V1.3.2
SIMATIC RF360R All versions < V2.0
SIMATIC Reader RF610R CMIIT All versions > V3.0 < V4.0
SIMATIC Reader RF610R ETSI All versions > V3.0 < V4.0
SIMATIC Reader RF610R FCC All versions > V3.0 < V4.0
SIMATIC Reader RF615R CMIIT All versions > V3.0 < V4.0
SIMATIC Reader RF615R ETSI All versions > V3.0 < V4.0
SIMATIC Reader RF615R FCC All versions > V3.0 < V4.0
SIMATIC Reader RF650R ARIB All versions > V3.0 < V4.0
SIMATIC Reader RF650R CMIIT All versions > V3.0 < V4.0
SIMATIC Reader RF650R ETSI All versions > V3.0 < V4.0
SIMATIC Reader RF650R FCC All versions > V3.0 < V4.0
SIMATIC Reader RF680R ARIB All versions > V3.0 < V4.0
SIMATIC Reader RF680R CMIIT All versions > V3.0 < V4.0
SIMATIC Reader RF680R ETSI All versions > V3.0 < V4.0
SIMATIC Reader RF680R FCC All versions > V3.0 < V4.0
SIMATIC Reader RF685R ARIB All versions > V3.0 < V4.0
SIMATIC Reader RF685R CMIIT All versions > V3.0 < V4.0
SIMATIC Reader RF685R ETSI All versions > V3.0 < V4.0
SIMATIC Reader RF685R FCC All versions > V3.0 < V4.0
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Additional Info

Authenticated
Unknown
Exploitable
Unknown
Reliability
Unknown
Stability
Unknown
Available Mitigations
Unknown
Shelf Life
Unknown
Userbase/Installbase
Unknown
Patch Effectiveness
Unknown
Technical Analysis