CVE-2021-21002

In Phoenix Contact FL COMSERVER UNI in versions < 2.40 a invalid Modbus exception response can lead to a temporary denial of service.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CERTVDECNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 55%
VendorProductVersion
phoenixcontactfl_comserver_uni_232\/422\/485_firmware
𝑥
< 2.40
phoenixcontactfl_comserver_uni_232\/422\/485-t_firmware
𝑥
< 2.40
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://cert.vde.com/en-us/advisories/vde-2021-022
https://cert.vde.com/en-us/advisories/vde-2021-022