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CVE-2021-25677

Published: Apr 22, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-330
5.3MEDIUM
NVD MITRE
EPSS Score
1.1%
Top 37.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-330

Affected Products

Siemens AG
commercial·DEaka Siemens
SIMOTICS CONNECT 400
ICS / OT / IoT
APOGEE PXC Compact (BACnet)
ICS / OT / IoT
APOGEE PXC Compact (P2 Ethernet)
ICS / OT / IoT
APOGEE PXC Modular (BACnet)
ICS / OT / IoT
APOGEE PXC Modular (P2 Ethernet)
ICS / OT / IoT
Nucleus NET
ICS / OT / IoT
Nucleus ReadyStart V3
ICS / OT / IoT
Nucleus ReadyStart V4
ICS / OT / IoT
and 9 more affected products View all →

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://www.securitylab.ru/news/518760.php&#13;
securitylab.ru
https://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdf&#13;
cert-portal.siemens.com
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-13&#13;
us-cert.cisa.gov
and 19 more references View all →

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