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Fencer Vulns
medium 5.3

CVE-2023-52891 json

A vulnerability has been identified in SIMATIC Energy Manager Basic (All versions < V7.5), SIMATIC Energy Manager PRO (All versions < V7.5)…

published 2024-07-09 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-59603

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

A vulnerability has been identified in SIMATIC Energy Manager Basic (All versions < V7.5), SIMATIC Energy Manager PRO (All versions < V7.5), SIMATIC IPC DiagBase (All versions), SIMATIC IPC DiagMonitor (All versions), SIMIT V10 (All versions), SIMIT V11 (All versions < V11.1). Unified Automation .NET based OPC UA Server SDK before 3.2.2 used in Siemens products are affected by a similar vulnerability as documented in CVE-2023-27321 for the OPC Foundation UA .NET Standard implementation. A successful attack may lead to high load situation and memory exhaustion, and may block the server.

Patch / fix

  • Siemens SIMATIC Energy Manager Basic V7.5
  • Siemens SIMATIC Energy Manager PRO V7.5
  • Siemens SIMIT V11 V11.1
  • siemens simatic_energy_manager_basic V7.5
  • siemens simatic_energy_manager_pro V7.5
  • siemens simit_v11 V11.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-24-193-07 updated cvss 5.3

Siemens SIMATIC and SIMIT

  • Siemens SIMATIC Energy Manager Basic <V7.5 Siemens SIMATIC Energy Manager PRO <V7.5
    affected: fixed in V7.5, mitigation support.industry.siemens.com
  • Siemens SIMATIC IPC DiagBase Siemens SIMATIC IPC DiagMonitor Siemens SIMIT V10
    affected: mitigation, no fix planned
  • Siemens SIMIT V11 <V11.1
    affected: fixed in V11.1, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • Siemens SIMATIC Energy Manager Basic
  • Siemens SIMATIC Energy Manager PRO
  • Siemens SIMATIC IPC DiagBase
  • Siemens SIMATIC IPC DiagMonitor
  • Siemens SIMIT V10
  • Siemens SIMIT V11
  • siemens simatic_energy_manager_basic
  • siemens simatic_energy_manager_pro
  • siemens simatic_ipc_diagbase
  • siemens simatic_ipc_diagmonitor
  • siemens simit_v10
  • siemens simit_v11

Classification

Weakness
  • CWE-1325 Improperly Controlled Sequential Memory Allocation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.