CVE-2016-8562highunder attack

CVE-2016-8562

Published · Updated

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51Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Actcvss 7.5epss 3.6%
from disclosure to weapon
Published on NVDNov 18
CISA KEV+1931d
Action required by CISAfederal deadline: 2022-03-24

Apply updates per vendor instructions.

In short

A vulnerability in SIMATIC CP 1543-1 networking devices allows attackers to modify SNMP settings that should be read-only, potentially disrupting network operations or causing the device to stop functioning.

Technical detail

Unauthenticated SNMP write access on UDP port 161 permits modification of read-only variables in affected SIMATIC CP 1543-1 and SIPLUS NET CP 1543-1 devices. Exploitation requires network access to the device and special conditions; successful writes can degrade availability or trigger denial-of-service.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP 1543-1 (All versions < V2.0.28). Under special conditions it was possible to write SNMP variables on port 161/udp which should be read-only and should only be configured with TIA-Portal. A write to these variables could reduce the availability or cause a denial-of-service.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
n/a · n/a