A vulnerability has been identified in SIMATIC CP 1242-7 V2 (All versions < V3.3.46), SIMATIC CP 1243-1 (All versions < V3.3.46), SIMATIC…

Description

A vulnerability has been identified in SIMATIC CP 1242-7 V2 (All versions < V3.3.46), SIMATIC CP 1243-1 (All versions < V3.3.46), SIMATIC CP 1243-7 LTE EU (All versions < V3.3.46), SIMATIC CP 1243-7 LTE US (All versions < V3.3.46), SIMATIC CP 1243-8 IRC (All versions < V3.3.46), SIMATIC CP 1542SP-1 IRC (All versions >= V2.0 < V2.2.28), SIMATIC CP 1543-1 (All versions < V3.0.22), SIMATIC CP 1543SP-1 (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS NET CP 1242-7 V2 (All versions < V3.3.46), SIPLUS NET CP 1543-1 (All versions < V3.0.22), SIPLUS S7-1200 CP 1243-1 (All versions < V3.3.46), SIPLUS S7-1200 CP 1243-1 RAIL (All versions < V3.3.46). The application lacks proper validation of user-supplied data when parsing specific messages. This could result in a heap-based buffer overflow. An attacker could leverage this vulnerability to execute code in the context of device.

Scores

EPSS (exploitation in 30 days)

2.1% · top 18% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 10.0.

Weakness

• CWE-122: Heap-based Buffer Overflow (opens in a new tab)All about CWE-122 and its CVEs
• CWE-787 (opens in a new tab)All about CWE-787 and its CVEs

Affected products

• Siemens · SIMATIC CP 1242-7 V2

  • affected All versions < V3.3.46

• Siemens · SIMATIC CP 1243-1

  • affected All versions < V3.3.46

• Siemens · SIMATIC CP 1243-7 LTE EU

  • affected All versions < V3.3.46

• Siemens · SIMATIC CP 1243-7 LTE US

  • affected All versions < V3.3.46

• Siemens · SIMATIC CP 1243-8 IRC

  • affected All versions < V3.3.46

• Siemens · SIMATIC CP 1542SP-1 IRC

  • affected All versions >= V2.0 < V2.2.28

• Siemens · SIMATIC CP 1543-1

  • affected All versions < V3.0.22

• Siemens · SIMATIC CP 1543SP-1

  • affected All versions >= V2.0 < V2.2.28

• Siemens · SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL

  • affected All versions >= V2.0 < V2.2.28

• Siemens · SIPLUS ET 200SP CP 1543SP-1 ISEC

  • affected All versions >= V2.0 < V2.2.28

• Siemens · SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL

  • affected All versions >= V2.0 < V2.2.28

• Siemens · SIPLUS NET CP 1242-7 V2

  • affected All versions < V3.3.46

• Siemens · SIPLUS NET CP 1543-1

  • affected All versions < V3.0.22

• Siemens · SIPLUS S7-1200 CP 1243-1

  • affected All versions < V3.3.46

• Siemens · SIPLUS S7-1200 CP 1243-1 RAIL

  • affected All versions < V3.3.46

References (1)

• https://cert-portal.siemens.com/productcert/pdf/ssa-517377.pdf (opens in a new tab)x_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2022-34819](https://trackcve.app/badge/CVE-2022-34819.svg)](https://trackcve.app/cve/CVE-2022-34819)

Record last updated 21 Apr 2025, 13:51 UTC.