CVE-2022-27640

MEDIUM
6.5
CVSS Score
Published: May 10, 2022 at 09:47 AM UTC
Updated: June 17, 2026 at 04:37 AM UTC
4 products affected across 1 vendorSIMATIC Cp 443-1 Rna FirmwareSIMATIC Cp 442-1 Rna FirmwareSimatic Cp 442-1 Rna

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%

Description

A vulnerability has been identified in SIMATIC CP 442-1 RNA (All versions < V1.5.18), SIMATIC CP 443-1 RNA (All versions < V1.5.18). The affected devices improperly handles excessive ARP broadcast requests. This could allow an attacker to create a denial of service condition by performing ARP storming attacks, which can cause the device to reboot.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Affected range stops below 1.5.18, so it looks safe — our inference, not a vendor statement
siemens-simatic-cp-442-1-rna (same device)
Affected range stops below 1.5.18, so it looks safe — our inference, not a vendor statement
siemens-simatic-cp-443-1-rna (same device)
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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