VulnerabilityModified
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.
HIGH 7.5EPSS 0.96%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Phoenix Contact FL COMSERVER UNI in versions < 2.40 a invalid Modbus exception response can lead to a temporary denial of service.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.96% probability · 60th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-772
- Affected
- phoenixcontact/fl comserver uni 232\/422\/485 firmware · phoenixcontact/fl comserver uni 232\/422\/485-t firmware
- Source
- info@cert.vde.com
References
- https://cert.vde.com/en-us/advisories/vde-2021-022Third Party Advisory
- https://cert.vde.com/en-us/advisories/vde-2021-022Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.