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Vulnerability · Published Jul 12, 2022 · Assigned by siemens

CVE-2022-33137

High 8.0

In plain English

A high-severity security flaw 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 0.9% (higher than 59% of all known vulnerabilities).

Severity (CVSS NVD)8.0High
Exploit odds (30 days)0.9%top 41.2% 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). The web session management of affected devices does not invalidate session ids in certain logout scenarios. This could allow an authenticated remote attacker to hijack other users' sessions.

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-613

References