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CVE-2023-28766

A vulnerability has been identified in SIPROTEC 5 6MD85 (CP300) (All versions >= V7.80 < V9.40), SIPROTEC 5 6MD86 (CP300) (All versions >= V7.80 < V9.40), SIPROTEC 5 6MD89 (CP300) (All versions >= ...

Published: Apr 11, 2023Updated: Nov 11, 2025 Sources: CVE List NVD csafCWE-476
7.5HIGH
NVD MITRE
EPSS Score
0.9%
Top 43.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

SIPROTEC 5 devices contain a null pointer dereference vulnerability in the web service. This could allow an attacker to send unauthenticated maliciously crafted http request that could cause denial of service condition of the device. Siemens has released new versions for the affected products and recommends to update to the latest versions.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-476

Affected Products

Siemens
commercial·DEaka siemens ag
SIPROTEC 5 6MD85 (CP300)
ICS / OT / IoT
SIPROTEC 5 6MD86 (CP300)
ICS / OT / IoT
SIPROTEC 5 6MD89 (CP300)
ICS / OT / IoT
SIPROTEC 5 6MU85 (CP300)
ICS / OT / IoT
SIPROTEC 5 7KE85 (CP300)
ICS / OT / IoT
SIPROTEC 5 7SA82 (CP100)
ICS / OT / IoT
SIPROTEC 5 7SA82 (CP150)
ICS / OT / IoT
SIPROTEC 5 7SA86 (CP300)
ICS / OT / IoT
and 75 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2023-28766?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/csaf/ssa-322980.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-322980.html
cert-portal.siemens.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2023/icsa-23-103-06.json
raw.githubusercontent.com
and 8 more references View all →

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