Cyber Resilience

CVE-2021-31881

High

Published: 09 November 2021

Published
09 November 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 7.1 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
EPSS Score 0.0141 81.0th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-31881 is a high-severity Out-of-bounds Read (CWE-125) vulnerability in Siemens Capital Vstar. Its CVSS base score is 7.1 (High).

Operationally, ranked in the top 19.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303). When processing a DHCP OFFER message, the DHCP client application does not validate the length of the Vendor…

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option(s), leading to Denial-of-Service conditions. (FSMD-2021-0008)

CWE(s)
CWE-125

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

siemens
capital vstar
all versions
siemens
nucleus net
all versions
siemens
nucleus readystart v3
≤ 2012.08
siemens
nucleus source code
all versions
siemens
apogee modular building controller firmware
all versions
siemens
apogee modular equiment controller firmware
all versions
siemens
apogee pxc compact firmware
all versions
siemens
apogee pxc modular firmware
all versions
siemens
talon tc compact firmware
all versions
siemens
talon tc modular firmware
all versions

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References