CVE & CISA-KEV Catalog

CVE-2023-35920

HIGH
7.5
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). Affected devices cannot properly process specially crafted IP packets sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.

CWE-400Resource Exhaustion

How to fix

Remediation Available
simatic mv540 h firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-35920derived from NVD
simatic mv540 s firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-35920derived from NVD
simatic mv550 h firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-35920derived from NVD
simatic mv550 s firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-35920derived from NVD
simatic mv560 u firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-35920derived from NVD
simatic mv560 x firmwareNVD
Affected:< 3.3.4Fixed in:3.3.4CVE-2023-35920derived 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

0.65%probability of exploitation in 30 days
47thpercentile

Moderate risk: more likely to be exploited than 47% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

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

CVESeverityCVSSEPSSExploitedFix
CVE-2023-44487High7.5100%KEVFix
CVE-2021-44228Critical10.0100%KEV + RansomFix
CVE-2011-3192High7.899%-Fix
CVE-2019-11478Medium5.395%-Fix
CVE-2024-25617Medium5.389%-Fix
CVE-2018-1000115High7.589%-Fix
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CVE-2023-35920 severity badge

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.