SARA / Free Tools / CVE / CVE-2023-32735

CVE-2023-32735 — A vulnerability has been identified in SIMATIC STEP 7 Safety V16 (All versions <

CVSS

7.0 HIGH

EPSS

0.06% (top 82.30%)

CWE

CWE-502

Published

2024-07-09T12:04:26.871Z

Last modified

2025-08-27T20:32:53.425Z

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

01What is this vulnerability?

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…

02Affected products

Vendor	Product	Versions
Siemens	SIMATIC STEP 7 Safety V16	0
Siemens	SIMATIC STEP 7 Safety V17	0
Siemens	SIMATIC STEP 7 Safety V18	0
Siemens	SIMATIC STEP 7 V16	0
Siemens	SIMATIC STEP 7 V17	0
Siemens	SIMATIC STEP 7 V18	0
Siemens	SIMATIC WinCC Unified V16	0
Siemens	SIMATIC WinCC Unified V17	0
Siemens	SIMATIC WinCC Unified V18	0
Siemens	SIMATIC WinCC V16	0
Siemens	SIMATIC WinCC V17	0
Siemens	SIMATIC WinCC V18	0
Siemens	SIMOCODE ES V16	0
Siemens	SIMOCODE ES V17	0
Siemens	SIMOCODE ES V18	0
Siemens	SIMOTION SCOUT TIA V5.4 SP1	0
Siemens	SIMOTION SCOUT TIA V5.4 SP3	0
Siemens	SIMOTION SCOUT TIA V5.5 SP1	0
Siemens	SINAMICS Startdrive V16	0
Siemens	SINAMICS Startdrive V17	0
Siemens	SINAMICS Startdrive V18	0
Siemens	SIRIUS Safety ES V17	0
Siemens	SIRIUS Safety ES V18	0
Siemens	SIRIUS Soft Starter ES V17	0
Siemens	SIRIUS Soft Starter ES V18	0
Siemens	Soft Starter ES V16	0
Siemens	TIA Portal Cloud V3.0	0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

Published: 2024-07-09T12:04:26.871Z
Last modified: 2025-08-27T20:32:53.425Z

09References

cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/html/ssa-779936.html

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