Resource exhaustion in Siemens Simatic Mv540 H
CVE-2023-35921
A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3.4), SIMATIC MV540 S (All versions < V3.3.4), SIMATIC MV550 H (All versions < V3.3.4), SIMATIC MV550 S (All versions < V3.3.4), SIMATIC MV560 U (All versions < V3.3.4), SIMATIC MV560 X (All versions < V3.3.4). Affected devices cannot properly process specially crafted Ethernet frames sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.009 (57.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Siemens Simatic Mv540 H — versions All versions < V3.3.4
- Siemens Simatic Mv540 H
- Siemens Simatic Mv540 H Firmware
- Siemens Simatic Mv540 S — versions All versions < V3.3.4
- Siemens Simatic Mv540 S
- Siemens Simatic Mv540 S Firmware
- Siemens Simatic Mv550 H — versions All versions < V3.3.4
- Siemens Simatic Mv550 H
- Siemens Simatic Mv550 H Firmware
- Siemens Simatic Mv550 S — versions All versions < V3.3.4
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-561322.pdf (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-35921?
- CVE-2023-35921 is a high-severity vulnerability in Siemens Simatic Mv540 H, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-07-11.
- How severe is CVE-2023-35921?
- High severity. CVSS v3 base score is 7.5 out of 10.