High severity8.6NVD Advisory· Published Jul 11, 2023· Updated Jun 17, 2026
CVE-2023-36521
CVE-2023-36521
Description
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). The result synchronization server of the affected products contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation of all socket-based communication of the affected products if the result server is enabled.
Affected products
14- cpe:2.3:o:siemens:simatic_mv540_h_firmware:*:*:*:*:*:*:*:*Range: <3.3.4
- cpe:2.3:o:siemens:simatic_mv540_s_firmware:*:*:*:*:*:*:*:*Range: <3.3.4
- cpe:2.3:o:siemens:simatic_mv550_h_firmware:*:*:*:*:*:*:*:*Range: <3.3.4
- cpe:2.3:o:siemens:simatic_mv550_s_firmware:*:*:*:*:*:*:*:*Range: <3.3.4
- cpe:2.3:o:siemens:simatic_mv560_u_firmware:*:*:*:*:*:*:*:*Range: <3.3.4
- cpe:2.3:o:siemens:simatic_mv560_x_firmware:*:*:*:*:*:*:*:*Range: <3.3.4
< V3.3.4+ 2 more
- (no CPE)range: < V3.3.4
- (no CPE)range: All versions < V3.3.4
- (no CPE)range: All versions < V3.3.4
< V3.3.4+ 2 more
- (no CPE)range: < V3.3.4
- (no CPE)range: All versions < V3.3.4
- (no CPE)range: All versions < V3.3.4
All versions < V3.3.4+ 1 more
- (no CPE)range: All versions < V3.3.4
- (no CPE)range: All versions < V3.3.4
Patches
Vulnerability mechanics
References
1- cert-portal.siemens.com/productcert/pdf/ssa-561322.pdfnvdVendor Advisory
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