Vulnerability Details CVE-2021-25677
A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), SIMOTICS CONNECT 400 (All versions >= V0.5.0.0 < V1.0.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS client does not properly randomize DNS transaction IDs. That could allow an attacker to poison the DNS cache or spoof DNS resolving.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 58.7%
CVSS Severity
CVSS v3 Score 5.3
CVSS v2 Score 5.0
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-705111.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-705111.pdf
Products affected by CVE-2021-25677
-
cpe:2.3:a:siemens:nucleus_net:-
-
cpe:2.3:a:siemens:nucleus_net:5.2
-
cpe:2.3:a:siemens:nucleus_readystart_v3:2013.08
-
cpe:2.3:a:siemens:nucleus_readystart_v3:2017.02.3
-
cpe:2.3:a:siemens:nucleus_readystart_v4:*
-
cpe:2.3:a:siemens:nucleus_source_code:-
-
cpe:2.3:h:siemens:simotics_connect_400:-
-
cpe:2.3:o:siemens:simotics_connect_400_firmware:0.5.0.0