A vulnerability has been identified in SIMATIC Drive Controller CPU 1504D TF, SIMATIC Drive Controller CPU 1507D TF, SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants), SIMATIC S7-1200 CPU family (incl. SIPLUS variants), SIMATIC S7-1500 CPU 1510SP F-1 PN, SIMATIC S7-1500 CPU 1510SP-1 PN, SIMATIC S7-1500 CPU 1511-1 PN, SIMATIC S7-1500 CPU 1511-1 PN, SIMATIC S7-1500 CPU 1511C-1 PN, SIMATIC S7-1500 CPU 1511C-1 PN, SIMATIC S7-1500 CPU 1511F-1 PN, SIMATIC S7-1500 CPU 1511F-1 PN, SIMATIC S7-1500 CPU 1511T-1 PN, SIMATIC S7-1500 CPU 1511TF-1 PN, SIMATIC S7-1500 CPU 1512C-1 PN, SIMATIC S7-1500 CPU 1512C-1 PN, SIMATIC S7-1500 CPU 1512SP F-1 PN, SIMATIC S7-1500 CPU 1512SP-1 PN, SIMATIC S7-1500 CPU 1513-1 PN, SIMATIC S7-1500 CPU 1513-1 PN, SIMATIC S7-1500 CPU 1513F-1 PN, SIMATIC S7-1500 CPU 1513F-1 PN, SIMATIC S7-1500 CPU 1513R-1 PN, SIMATIC S7-1500 CPU 1515-2 PN, SIMATIC S7-1500 CPU 1515-2 PN, SIMATIC S7-1500 CPU 1515F-2 PN, SIMATIC S7-1500 CPU 1515F-2 PN, SIMATIC S7-1500 CPU 1515R-2 PN, SIMATIC S7-1500 CPU 1515T-2 PN, SIMATIC S7-1500 CPU 1515TF-2 PN, SIMATIC S7-1500 CPU 1516-3 PN/DP, SIMATIC S7-1500 CPU 1516-3 PN/DP, SIMATIC S7-1500 CPU 1516F-3 PN/DP, SIMATIC S7-1500 CPU 1516F-3 PN/DP, SIMATIC S7-1500 CPU 1516T-3 PN/DP, SIMATIC S7-1500 CPU 1516TF-3 PN/DP, SIMATIC S7-1500 CPU 1517-3 PN/DP, SIMATIC S7-1500 CPU 1517F-3 PN/DP, SIMATIC S7-1500 CPU 1517H-3 PN, SIMATIC S7-1500 CPU 1517T-3 PN/DP, SIMATIC S7-1500 CPU 1517TF-3 PN/DP, SIMATIC S7-1500 CPU 1518-4 PN/DP, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518HF-4 PN, SIMATIC S7-1500 CPU 1518T-4 PN/DP, SIMATIC S7-1500 CPU 1518TF-4 PN/DP, SIMATIC S7-1500 CPU S7-1518-4 PN/DP ODK, SIMATIC S7-1500 CPU S7-1518F-4 PN/DP ODK, SIMATIC S7-1500 ET 200pro: CPU 1513PRO F-2 PN, SIMATIC S7-1500 ET 200pro: CPU 1513PRO-2 PN, SIMATIC S7-1500 ET 200pro: CPU 1516PRO F-2 PN, SIMATIC S7-1500 ET 200pro: CPU 1516PRO-2 PN, SIMATIC S7-1500 Software Controller, SIMATIC S7-PLCSIM Advanced, SIPLUS ET 200SP CPU 1510SP F-1 PN, SIPLUS ET 200SP CPU 1510SP F-1 PN RAIL, SIPLUS ET 200SP CPU 1510SP-1 PN, SIPLUS ET 200SP CPU 1510SP-1 PN, SIPLUS ET 200SP CPU 1510SP-1 PN RAIL, SIPLUS ET 200SP CPU 1510SP-1 PN RAIL, SIPLUS ET 200SP CPU 1512SP F-1 PN, SIPLUS ET 200SP CPU 1512SP F-1 PN, SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL, SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL, SIPLUS ET 200SP CPU 1512SP-1 PN, SIPLUS ET 200SP CPU 1512SP-1 PN, SIPLUS ET 200SP CPU 1512SP-1 PN RAIL, SIPLUS ET 200SP CPU 1512SP-1 PN RAIL, SIPLUS S7-1500 CPU 1511-1 PN, SIPLUS S7-1500 CPU 1511-1 PN, SIPLUS S7-1500 CPU 1511-1 PN, SIPLUS S7-1500 CPU 1511-1 PN, SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL, SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL, SIPLUS S7-1500 CPU 1511-1 PN TX RAIL, SIPLUS S7-1500 CPU 1511-1 PN TX RAIL, SIPLUS S7-1500 CPU 1511F-1 PN, SIPLUS S7-1500 CPU 1511F-1 PN, SIPLUS S7-1500 CPU 1513-1 PN, SIPLUS S7-1500 CPU 1513-1 PN, SIPLUS S7-1500 CPU 1513-1 PN, SIPLUS S7-1500 CPU 1513-1 PN, SIPLUS S7-1500 CPU 1513F-1 PN, SIPLUS S7-1500 CPU 1513F-1 PN, SIPLUS S7-1500 CPU 1515F-2 PN, SIPLUS S7-1500 CPU 1515F-2 PN, SIPLUS S7-1500 CPU 1515F-2 PN RAIL, SIPLUS S7-1500 CPU 1515F-2 PN T2 RAIL, SIPLUS S7-1500 CPU 1515R-2 PN, SIPLUS S7-1500 CPU 1515R-2 PN TX RAIL, SIPLUS S7-1500 CPU 1516-3 PN/DP, SIPLUS S7-1500 CPU 1516-3 PN/DP, SIPLUS S7-1500 CPU 1516-3 PN/DP, SIPLUS S7-1500 CPU 1516-3 PN/DP, SIPLUS S7-1500 CPU 1516-3 PN/DP RAIL, SIPLUS S7-1500 CPU 1516-3 PN/DP TX RAIL, SIPLUS S7-1500 CPU 1516F-3 PN/DP, SIPLUS S7-1500 CPU 1516F-3 PN/DP, SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL, SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL, SIPLUS S7-1500 CPU 1517H-3 PN, SIPLUS S7-1500 CPU 1518-4 PN/DP, SIPLUS S7-1500 CPU 1518-4 PN/DP MFP, SIPLUS S7-1500 CPU 1518F-4 PN/DP, SIPLUS S7-1500 CPU 1518HF-4 PN, SIPLUS TIM 1531 IRC, TIM 1531 IRC. Affected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial of service in the device
Published 2022-12-13 16:15:15
Updated 2023-07-11 16:15:12
Source Siemens AG
View at NVD,   CVE.org
Vulnerability category: Input validationDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2021-44695

0.11%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 44 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-44695

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
NIST
4.9
MEDIUM CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
1.2
3.6
Siemens AG

CWE ids for CVE-2021-44695

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)
  • The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.
    Assigned by: productcert@siemens.com (Secondary)

Products affected by CVE-2021-44695

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