Critical severity · published Nov 9, 2021
CVE-2021-31345
A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All…
9.1
CVSS
1.6%
EPSS
No
On KEV
Description
A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All versions). The total length of an UDP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on a user-defined applications that runs on top of the UDP protocol. (FSMD-2021-0006)
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AM
Apogee Modular Building Controller Firmware · Siemens
All versions, or not specified · source: NVD
AM
Apogee Modular Equiment Controller Firmware · Siemens
All versions, or not specified · source: NVD
AP
Apogee Pxc Compact Firmware · Siemens
All versions, or not specified · source: NVD
AP
Apogee Pxc Modular Firmware · Siemens
All versions, or not specified · source: NVD
CV
Capital Vstar · Siemens
All versions, or not specified · source: NVD
NN
Nucleus Net · Siemens
All versions, or not specified · source: NVD
NR
Nucleus Readystart V3 · Siemens
before 2014.12 · source: NVD
NS
Nucleus Source Code · Siemens
All versions, or not specified · source: NVD
TT
Talon TC Compact Firmware · Siemens
All versions, or not specified · source: NVD
TT
Talon TC Modular Firmware · Siemens
All versions, or not specified · source: NVD
Affected product
AM
Apogee Modular Building Controller Firmware
Siemens
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31345
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31345
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-044112.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-114589.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-620288.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-845392.html
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf
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A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All…