VDB

ICSA-21-257-23

ICSA-21-257-23 PUBLISHED CVSS 5.300000190734863 MEDIUM

The latest updates for the below mentioned products fix a vulnerability that allows an unauthenticated attacker to read PLC variables from affected devices without proper authentication under certain circumstances. Siemens has released updates for some of the affected products, is working on updates for the remaining affected products and recommends specific countermeasures until fixes are available.

Risk Scores

CVSS v3.1
5.300000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C

Affected Products

VendorProductVersions
SIMATIC S7-1500 Software Controller
SIMATIC Drive Controller family
SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)
SIMATIC S7-1200 CPU family (incl. SIPLUS variants)
SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)
SIMATIC S7 PLCSIM Advanced
TIM 1531 IRC (incl. SIPLUS NET variants)

Timeline

  • Aug 10, 2021 CVE Published
  • May 6, 2025 CVE Updated

References

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