CVE & CISA-KEV Catalog

CVE-2021-31340

HIGH

7.5

CVSS v3

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.

CWE-400Resource Exhaustion

How to fix

Remediation Available

simatic reader rf610r cmiit firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf610r etsi firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf610r fcc firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf615r cmiit firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf615r etsi firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf615r fcc firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf650r arib firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf650r cmiit firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf650r etsi firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf650r fcc firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf680r arib firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf680r cmiit firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf680r etsi firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf680r fcc firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf685r arib firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf685r cmiit firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf685r etsi firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic reader rf685r fcc firmwareNVD

Affected:>= 3.0, < 4.0Fixed in:4.0CVE-2021-31340derived from NVD

simatic rf166c firmwareNVD

Affected:>= 1.1, < 1.3.2Fixed in:1.3.2CVE-2021-31340derived from NVD

simatic rf185c firmwareNVD

Affected:>= 1.1, < 1.3.2Fixed in:1.3.2CVE-2021-31340derived from NVD

simatic rf186c firmwareNVD

Affected:>= 1.1, < 1.3.2Fixed in:1.3.2CVE-2021-31340derived from NVD

simatic rf186ci firmwareNVD

Affected:>= 1.1, < 1.3.2Fixed in:1.3.2CVE-2021-31340derived from NVD

simatic rf188c firmwareNVD

Affected:>= 1.1, < 1.3.2Fixed in:1.3.2CVE-2021-31340derived from NVD

simatic rf188ci firmwareNVD

Affected:>= 1.1, < 1.3.2Fixed in:1.3.2CVE-2021-31340derived from NVD

simatic rf360r firmwareNVD

Affected:< 2.0Fixed in:2.0CVE-2021-31340derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.99%probability of exploitation in 30 days

58thpercentile

Moderate risk: more likely to be exploited than 58% of all known CVEs.

References

Patch1

cert-portal.siemens.com

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	89%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.