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CVE-2024-49849

HIGH
7.8
CVSS Score
Published: December 10, 2024 at 01:53 PM UTC
Updated: October 13, 2026 at 10:17 AM UTC
13 products affected across 1 vendorSINAMICS StartdriveSIMATIC WinCCSIMATIC Step 7

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

A vulnerability has been identified in SIMATIC S7-PLCSIM V16 (All versions), SIMATIC S7-PLCSIM V17 (All versions), SIMATIC STEP 7 Safety V16 (All versions), SIMATIC STEP 7 Safety V17 (All versions), SIMATIC STEP 7 Safety V18 (All versions), SIMATIC STEP 7 Safety V19 (All versions < V19 Update 4), SIMATIC STEP 7 V16 (All versions), SIMATIC STEP 7 V17 (All versions), SIMATIC STEP 7 V18 (All versions), SIMATIC STEP 7 V19 (All versions < V19 Update 4), SIMATIC WinCC Unified V16 (All versions), SIMATIC WinCC Unified V17 (All versions), SIMATIC WinCC Unified V18 (All versions), SIMATIC WinCC Unified V19 (All versions < V19 Update 4), SIMATIC WinCC V16 (All versions), SIMATIC WinCC V17 (All versions), SIMATIC WinCC V18 (All versions), SIMATIC WinCC V19 (All versions < V19 Update 4), SIMOCODE ES V16 (All versions), SIMOCODE ES V17 (All versions), SIMOCODE ES V18 (All versions), SIMOCODE ES V19 (All versions), SIMOTION SCOUT TIA V5.4 (All versions), SIMOTION SCOUT TIA V5.5 (All versions), SIMOTION SCOUT TIA V5.6 (All versions < V5.6 SP1 HF7), SINAMICS Startdrive V16 (All versions), SINAMICS Startdrive V17 (All versions), SINAMICS Startdrive V18 (All versions), SINAMICS Startdrive V19 (All versions), SIRIUS Safety ES V17 (TIA Portal) (All versions), SIRIUS Safety ES V18 (TIA Portal) (All versions), SIRIUS Safety ES V19 (TIA Portal) (All versions), SIRIUS Soft Starter ES V17 (TIA Portal) (All versions), SIRIUS Soft Starter ES V18 (TIA Portal) (All versions), SIRIUS Soft Starter ES V19 (TIA Portal) (All versions), TIA Portal Cloud V16 (All versions), TIA Portal Cloud V17 (All versions), TIA Portal Cloud V18 (All versions), TIA Portal Cloud V19 (All versions < V5.2.1.1). Affected products do not properly sanitize user-controllable input when parsing log files. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

SINAMICS Startdrive· Siemens
99%
016
SIMATIC S7-plcsim· Siemens
90%
016
SIMATIC Step 7· Siemens
90%
0
Affected range stops below V17 Update 9, so it looks safe — our inference, not a vendor statement
Affected range stops below V19 Update 4, so it looks safe — our inference, not a vendor statement
SIMATIC STEP 7 Safety· Siemens
90%
0
Affected range stops below V17 Update 9, so it looks safe — our inference, not a vendor statement
Affected range stops below V19 Update 4, so it looks safe — our inference, not a vendor statement
SIMATIC WinCC· Siemens
90%
016
SIMATIC WinCC (TIA Portal)· Siemens
90%
0
Affected range stops below V17 Update 9, so it looks safe — our inference, not a vendor statement
Affected range stops below V19 Update 4, so it looks safe — our inference, not a vendor statement
SIMATIC Wincc Unified· Siemens
90%
0
Affected range stops below V17 Update 9, so it looks safe — our inference, not a vendor statement
Affected range stops below V19 Update 4, so it looks safe — our inference, not a vendor statement
Simocode Es· Siemens
90%
016
SIMOTION SCOUT TIA· Siemens
90%
0
Affected range stops below V5.6 SP1 HF7, so it looks safe — our inference, not a vendor statement
SINAMICS Startdrive V17· Siemens
90%
017

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: [email protected]
https://cert-portal.siemens.com/productcert/html/ssa-800126.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHsiemens
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-502

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