Vulnerability in Siemens Simatic Mv540 H
CVE-2022-33137
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (57.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.009 · change: +0.000
Affected products
- Siemens Simatic Mv540 H — versions All versions < V3.3
- Siemens Simatic Mv540 H
- Siemens Simatic Mv540 H Firmware
- Siemens Simatic Mv540 S — versions All versions < V3.3
- Siemens Simatic Mv540 S
- Siemens Simatic Mv540 S Firmware
- Siemens Simatic Mv550 H — versions All versions < V3.3
- Siemens Simatic Mv550 H
- Siemens Simatic Mv550 H Firmware
- Siemens Simatic Mv550 S — versions All versions < V3.3
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-348662.pdf (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-33137?
- CVE-2022-33137 is a high-severity vulnerability in Siemens Simatic Mv540 H, classified under Insufficient Session Expiration. CVSS score: 8.0/10. Published 2022-07-12.
- How severe is CVE-2022-33137?
- High severity. CVSS v3 base score is 8.0 out of 10.