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01 Record

CVE-2023-36521

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 <

HighPUBLISHEDCNA: siemens
CNA base score8.6 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:P/RL:O/RC:C

02 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 <

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.62% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 49.8% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-10-23.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-07-11 09:07Z3 YR AGO
Last updated
2024-11-21 14:09Z1 YR AGO
Reserved
2023-06-22
Assigning CNA
siemens
Record state
PUBLISHED
Severity
High (CVSS 8.6)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:P/RL:O/RC:C
Weaknesses
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.1
Document digest
d7815e9704fdcfe9f7e91fc3bdddd3a943609b3fed04ae2c597f921b9ec1b65f

05 Affected products

VendorProductVersionsPlatforms
SiemensSIMATIC MV540 HAll versions < V3.3.4—
SiemensSIMATIC MV540 SAll versions < V3.3.4—
SiemensSIMATIC MV550 HAll versions < V3.3.4—
SiemensSIMATIC MV550 SAll versions < V3.3.4—
SiemensSIMATIC MV560 UAll versions < V3.3.4—
SiemensSIMATIC MV560 XAll versions < V3.3.4—
siemenssimatic_mv540_h0 to < V3.3.4—
siemenssimatic_mv540_s0 to < V3.3.4—
siemenssimatic_mv550_h0 to < V3.3.4—
siemenssimatic_mv550_s0 to < V3.3.4—
siemenssimatic_mv560_u0 to < V3.3.4—
siemenssimatic_mv560_x0 to < V3.3.4—

06 References