High severity · published May 10, 2022
CVE-2021-41545
A vulnerability has been identified in Desigo DXR2 (All versions < V01.21.142.5-22), Desigo PXC3 (All versions < V01.21.142.4-18), Desigo PXC4 (All versions <…
7.5
CVSS
0.9%
EPSS
No
On KEV
Description
A vulnerability has been identified in Desigo DXR2 (All versions < V01.21.142.5-22), Desigo PXC3 (All versions < V01.21.142.4-18), Desigo PXC4 (All versions < V02.20.142.10-10884), Desigo PXC5 (All versions < V02.20.142.10-10884). When the controller receives a specific BACnet protocol packet, an exception causes the BACnet communication function to go into a “out of work” state and could result in the controller going into a “factory reset” state.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DD
Desigo Dxr2 Firmware · Siemens
before 01.21.142.5-22 · source: NVD
DP
Desigo Pxc3 Firmware · Siemens
before 01.21.142.4-18 · source: NVD
DP
Desigo Pxc4 Firmware · Siemens
before 02.20.142.10-10884 · source: NVD
DP
Desigo Pxc5 Firmware · Siemens
before 02.20.142.10-10884 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-41545
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-41545
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-662649.pdf
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