CVE-2022-33137
Last modified
CVE-2022-33137 is a high-severity vulnerability rated 8/10 on the CVSS scale. 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. EPSS estimates a 0.73% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Siemens | Simatic Mv540 H Firmware | < 3.3 |
| Siemens | Simatic Mv540 S Firmware | < 3.3 |
| Siemens | Simatic Mv550 H Firmware | < 3.3 |
| Siemens | Simatic Mv550 S Firmware | < 3.3 |
| Siemens | Simatic Mv560 U Firmware | < 3.3 |
| Siemens | Simatic Mv560 X Firmware | < 3.3 |
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-348662.pdfPatch, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-348662.pdfPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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