CVE-2023-32735

No known exploitation. EPSS puts it in the 10th percentile. A vendor fix is available.

CVSS 3.16.5Medium EPSS percentile10th0.2% chance in 30 days CISA KEVNot listedNo confirmed exploitation
No public exploit known FixVendor fixNo build named by the sources

Published 2024-07-09Updated 2024-11-21Sources: CVE.org, NVD, BDU, CSAF

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

What it is

From the CVE record

A vulnerability has been identified in SIMATIC STEP 7 Safety V16 (All versions < V16 Update 7), SIMATIC STEP 7 Safety V17 (All versions < V17 Update 7), SIMATIC STEP 7 Safety V18 (All versions < V18 Update 2), SIMATIC STEP 7 V16 (All versions < V16 Update 7), SIMATIC STEP 7 V17 (All versions < V17 Update 7), SIMATIC STEP 7 V18 (All versions < V18 Update 2), SIMATIC WinCC Unified V16 (All versions < V16 Update 7), SIMATIC WinCC Unified V17 (All versions < V17 Update 7), SIMATIC WinCC Unified V18 (All versions < V18 Update 2), SIMATIC WinCC V16 (All versions < V16.7), SIMATIC WinCC V17 (All versions < V17.7), SIMATIC WinCC V18 (All versions < V18 Update 2), SIMOCODE ES V16 (All versions < V16 Update 7), SIMOCODE ES V17 (All versions < V17 Update 7), SIMOCODE ES V18 (All versions < V18 Update 2), SIMOTION SCOUT TIA V5.4 SP1 (All versions), SIMOTION SCOUT TIA V5.4 SP3 (All versions), SIMOTION SCOUT TIA V5.5 SP1 (All versions), SINAMICS Startdrive V16 (All versions), SINAMICS Startdrive V17 (All versions), SINAMICS Startdrive V18 (All versions), SIRIUS Safety ES V17 (All versions < V17 Update 7), SIRIUS Safety ES V18 (All versions < V18 Update 2), SIRIUS Soft Starter ES V17 (All versions < V17 Update 7), SIRIUS Soft Starter ES V18 (All versions < V18 Update 2), Soft Starter ES V16 (All versions < V16 Update 7), TIA Portal Cloud V3.0 (All versions < V18 Update 2). Affected applications do not properly restrict the .NET BinaryFormatter when deserializing hardware configuration profiles. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application. This is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS10th

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.2% chance of exploitation activity in the next 30 days, which ranks it in the 10th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

5 events over 135 days, from the signal feeds we watch.

2024-11-21Patch availablerecord updated
2024-07-09Publishedweakness classified, att&ck mapped

Affected products

Siemens AGcommercial · DEaka Siemens

And 30 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

Scored 6.5 by NVD.

How it is reached

Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
Attack Complexity LowNo special conditions — the attack can be reliably reproduced
Privileges Required HighRequires admin or elevated privileges
User Interaction RequiredA user must click a link, open a file, or perform some action

Scope

Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

Confidentiality HighTotal information disclosure — all data in the component is compromised
Integrity HighTotal loss of integrity — attacker can modify any data in the component
Availability HighTotal denial of service — the component is completely unavailable