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Vulnerability · Published Jul 12, 2022 · Assigned by siemens

CVE-2022-33138

High 7.5

In plain English

A high-severity missing authentication in SIMATIC MV540 H from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 72% of all known vulnerabilities).

Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.3%top 28.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
Siemens SIMATIC MV540 H All versions < V3.3
Siemens SIMATIC MV540 S All versions < V3.3
Siemens SIMATIC MV550 H All versions < V3.3
Siemens SIMATIC MV550 S All versions < V3.3
Siemens SIMATIC MV560 U All versions < V3.3
Siemens SIMATIC MV560 X All versions < V3.3

Weakness: CWE-306

References