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CVE-2023-35921

7.5 high SSVC exploitation: none Modified
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.5 · siemensNVD modified 2026-10-23 23:10

Affected (CPE criteria) 6

  • cpe:2.3:o:siemens:simatic_mv540_h_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_mv540_s_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_mv550_h_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_mv550_s_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_mv560_u_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_mv560_x_firmware:*:*:*:*:*:*:*:*

References 2