AUGUST 4, 2026
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Case File

CVE-2021-21003

MEDIUM · CVSS 5.3 EPSS 0.95%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-06-25 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. It may lead to a denial-of-service condition.

CVE
CVE-2021-21003
Severity
MEDIUM
CVSS
5.3
EPSS
0.95%

Original NVD Description

In Phoenix Contact FL SWITCH SMCS series products in multiple versions fragmented TCP-Packets may cause a Denial of Service of Web-, SNMP- and ICMP-Echo services. The switching functionality of the device is not affected.

Related CVEs

Other vulnerabilities affecting the same vendor(s)