Vulnerability in Phoenix Contact Fl Comserver
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.
EPSS: 0.010 (58.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Phoenix Contact Fl Comserver — versions UNI 232/422/485 (2313452), UNI 232/422/485-T (2904817)
- Phoenixcontact Fl_comserver_uni_232\/422\/485
- Phoenixcontact Fl_comserver_uni_232\/422\/485_firmware
- Phoenixcontact Fl_comserver_uni_232\/422\/485-t
- Phoenixcontact Fl_comserver_uni_232\/422\/485-t_firmware
Weakness classification (CWE)
References
- info@cert.vde.com (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21002?
- CVE-2021-21002 is a high-severity vulnerability in Phoenix Contact Fl Comserver, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2021-06-25.
- How severe is CVE-2021-21002?
- High severity. CVSS v3 base score is 7.5 out of 10.