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CVE-2021-31884

A vulnerability has been identified in APOGEE MBC (PPC) (BACnet) (All versions), APOGEE MBC (PPC) (P2 Ethernet) (All versions), APOGEE MEC (PPC) (BACnet) (All versions), APOGEE MEC (PPC) (P2 Ethern...

Published: Nov 9, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-170
9.8CRITICAL
NVD MITRE
EPSS Score
1.5%
Top 27.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

Multiple vulnerabilities (also known as "NUCLEUS:13") have been identified in the Nucleus RTOS (real-time operating system) and reported in the Siemens Security Advisory SSA-044112: https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf. The products listed below use affected versions of the Nucleus software and inherently contain these vulnerabilities. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-170NVD-CWE-Other

Affected Products

Siemens AG
commercial·DEaka siemens
Capital VSTAR
ICS / OT / IoT
Nucleus NET
ICS / OT / IoT
Nucleus ReadyStart V3
ICS / OT / IoT
Nucleus Source Code
ICS / OT / IoT
apogee modular building controller firmware
ICS / OT / IoT
apogee modular equiment controller firmware
ICS / OT / IoT
apogee pxc compact firmware
ICS / OT / IoT
apogee pxc modular firmware
ICS / OT / IoT
and 54 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2021-31884?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://cert-portal.siemens.com/productcert/csaf/ssa-114589.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/txt/ssa-114589.txt
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf
cert-portal.siemens.com
and 25 more references View all →

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