CVE & CISA-KEV Catalog

CVE-2023-36521

HIGH
8.6
CVSS v3
NVD

Description

A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3.4), SIMATIC MV540 S (All versions < V3.3.4), SIMATIC MV550 H (All versions < V3.3.4), SIMATIC MV550 S (All versions < V3.3.4), SIMATIC MV560 U (All versions < V3.3.4), SIMATIC MV560 X (All versions < V3.3.4). The result synchronization server of the affected products contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation of all socket-based communication of the affected products if the result server is enabled.

CWE-770Allocation of Resources Without Limits or Throttling

How to fix

Remediation Available
simatic mv540 h firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-36521derived from NVD
simatic mv540 s firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-36521derived from NVD
simatic mv550 h firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-36521derived from NVD
simatic mv550 s firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-36521derived from NVD
simatic mv560 u firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-36521derived from NVD
simatic mv560 x firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-36521derived 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
ScopeChanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

0.52%probability of exploitation in 30 days
41stpercentile

Moderate risk: more likely to be exploited than 41% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-770 (Allocation of Resources Without Limits or Throttling) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2023-50387High7.5100%-Fix
CVE-2019-11478Medium5.395%-Fix
CVE-2019-11479High7.592%-Fix
CVE-2024-27316High7.591%-Fix
CVE-2022-30522High7.590%-Fix
CVE-2019-9515High7.588%-Fix
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Markdown

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HTML

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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.