CVE-2021-33719

EUVD-2021-20396
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 CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition or potential remote code execution.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 67%
Affected Products (NVD)
VendorProductVersion
siemenssiprotec_5_with_cpu_variant_cp050
𝑥
< 8.80
siemenssiprotec_5_with_cpu_variant_cp100
𝑥
< 8.80
siemenssiprotec_5_with_cpu_variant_cp300
𝑥
< 8.80
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf