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CVE-2021-33720 PUBLISHED CVSS 7.5 HIGH

A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP200 (All versions), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition.

EPSS 0.44% · 63.2th percentile

Risk Scores

CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.44%
63.2th percentile

Affected Products

VendorProductVersions
SiemensSIPROTEC 5 relays with CPU variants CP300All versions < V8.80
siemenssiprotec_5_with_cpu_variant_cp3000
SiemensSIPROTEC 5 relays with CPU variants CP100All versions < V8.80
SiemensSIPROTEC 5 relays with CPU variants CP050All versions < V8.80
siemenssiprotec_5_with_cpu_variant_cp0500
siemenssiprotec_5_with_cpu_variant_cp1000

Timeline

References

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