Search/CVE-2021-31882
● CVE — Medium

CVE-2021-31882

VendorsiemensProductapogee modular building controller firmware, apogee modular equiment controller firmware, capital vstar, nucleus net, nucleus source code, nucleus readystart v3, apogee pxc compact firmware, apogee pxc modular firmware, talon tc compact firmware, talon tc modular firmwareDiscoveredNov 9, 2021UpdatedNov 21, 2024

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303). The DHCP client application does not validate the length of the Domain Name Server IP option(s) (0x06) when processing DHCP ACK packets. This may lead to Denial-of-Service conditions. (FSMD-2021-0011)

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CVSS v3.1
6.5 MEDIUM
EPSS
1.52%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Sep 3, 2026
▲ 0.05pp
1.48% → 1.52% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorADJACENT
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityNONE
IntegrityNONE
AvailabilityHIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Connections
11 relationships
Timeline
disclosure → media coverage
Nov 9, 2021
Disclosure — published as a CVE record. · last revised by NVD Nov 21, 2024