CVE & CISA-KEV Catalog

CVE-2021-31888

HIGHEPSS 82th pctl
8.8
CVSS v3
NVD

Description

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 Ethernet) (All versions), APOGEE PXC Compact (BACnet) (All versions < V3.5.4), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.19), APOGEE PXC Modular (BACnet) (All versions < V3.5.4), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.19), Desigo PXC00-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC00-U (All versions >= V2.3 and < V6.30.016), Desigo PXC001-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC100-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC12-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC128-U (All versions >= V2.3 and < V6.30.016), Desigo PXC200-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC22-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC22.1-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC36.1-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC50-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC64-U (All versions >= V2.3 and < V6.30.016), Desigo PXM20-E (All versions >= V2.3 and < V6.30.016), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus Source Code (All versions), TALON TC Compact (BACnet) (All versions < V3.5.4), TALON TC Modular (BACnet) (All versions < V3.5.4). FTP server does not properly validate the length of the “MKD/XMKD” command, leading to stack-based buffer overflows. This may result in Denial-of-Service conditions and Remote Code Execution. (FSMD-2021-0018)

CWE-170CWE-787Out-of-bounds Write

How to fix

Remediation Available
apogee pxc compact firmwareNVD
Affected:< 2.8.19Fixed in:2.8.19CVE-2021-31888derived from NVD
Affected:< 3.5.4Fixed in:3.5.4CVE-2021-31888derived from NVD
apogee pxc modular firmwareNVD
Affected:< 2.8.19Fixed in:2.8.19CVE-2021-31888derived from NVD
Affected:< 3.5.4Fixed in:3.5.4CVE-2021-31888derived from NVD
desigo pxc00-e.d firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxc00-u firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxc001-e.d firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxc100-e.d firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxc12-e.d firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxc128-u firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxc200-e.d firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxc22-e.d firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxc22.1-e.d firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxc36.1-e.d firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxc50-e.d firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxc64-u firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
desigo pxm20-e firmwareNVD
Affected:>= 2.3, < 6.30.016Fixed in:6.30.016CVE-2021-31888derived from NVD
nucleus readystart v3NVD
Affected:< 2017.02.4Fixed in:2017.02.4CVE-2021-31888derived from NVD
talon tc compact firmwareNVD
Affected:< 3.5.4Fixed in:3.5.4CVE-2021-31888derived from NVD
talon tc modular firmwareNVD
Affected:< 3.5.4Fixed in:3.5.4CVE-2021-31888derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

2.37%probability of exploitation in 30 days
82ndpercentile

Elevated risk: more likely to be exploited than 82% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.