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CVE record · CVE-2023-50821

Buffer overflow in Siemens SIMATIC PCS 7 V9.1 and others

CVSS 6.9 MediumEPSS 0.0018 · 7th percentile

Published by the CVE Program (CNA: siemens) at 9 Apr 2024, 08:34 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Siemens SIMATIC PCS 7 V9.1
  • affected before V9.1 SP2 UC04 custom
Other versions: unknown
Siemens SIMATIC WinCC Runtime Professional V17
  • affected before V17 Update 8 custom
Other versions: unknown
Siemens SIMATIC WinCC Runtime Professional V18
  • affected before V18 Update 4 custom
Other versions: unknown
Siemens SIMATIC WinCC Runtime Professional V19
  • affected before V19 Update 1 custom
Other versions: unknown
Siemens SIMATIC WinCC V7.5
  • affected before V7.5 SP2 Update 16 custom
Other versions: unknown
Siemens SIMATIC WinCC V8.0
  • affected before V8.0 Update 5 custom
Other versions: unknown
Identifiers
CVE-2023-50821
CNA
siemens
Weakness (CWE)
CWE-120
Tags
Published
9 Apr 2024
Updated
26 Feb 2025

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.2 Medium 3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C CNA (siemens)
6.9 Medium 4.0 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CNA (siemens)Used for this record
  • CISA KEV Not listed.
  • EPSS 0.0018, the 7th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 9 Apr 2024. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.