A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3), SIMATIC MV540 S (All versions < V3.3), SIMATIC MV550 H (All…

Description

A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3), SIMATIC MV540 S (All versions < V3.3), SIMATIC MV550 H (All versions < V3.3), SIMATIC MV550 S (All versions < V3.3), SIMATIC MV560 U (All versions < V3.3), SIMATIC MV560 X (All versions < V3.3). Affected devices do not perform authentication for several web API endpoints. This could allow an unauthenticated remote attacker to read and download data from the device.

Scores

EPSS (exploitation in 30 days)

1.3% · top 28% of all CVEs (7 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• CWE-306: Missing Authentication for Critical Function (opens in a new tab)All about CWE-306 and its CVEs

Affected products

• Siemens · SIMATIC MV540 H

  • affected All versions < V3.3

• Siemens · SIMATIC MV540 S

  • affected All versions < V3.3

• Siemens · SIMATIC MV550 H

  • affected All versions < V3.3

• Siemens · SIMATIC MV550 S

  • affected All versions < V3.3

• Siemens · SIMATIC MV560 U

  • affected All versions < V3.3

• Siemens · SIMATIC MV560 X

  • affected All versions < V3.3

References (1)

• https://cert-portal.siemens.com/productcert/pdf/ssa-348662.pdf (opens in a new tab)x_refsource_MISCx_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-2022-33138](https://trackcve.app/badge/CVE-2022-33138.svg)](https://trackcve.app/cve/CVE-2022-33138)

Record last updated 3 Aug 2024, 08:01 UTC.