CVE-2024-46887Network attack vector

Operational data disclosure via unauthenticated endpoint

Published Oct 8, 2024 · Updated Oct 21, 2025

Authentication bypass in Siemens SIMATIC S7-1500 CPUs allows remote attackers to read operational timing and communication-load data. The web server serves /ClientArea/RuntimeInfoData.mwsl without properly authenticating the request, returning current and configured cycle-time limits and maximum communication load. Network access to an enabled device web server is sufficient; the documented consequence is limited to disclosure of those operational values.

CVSS severity5.3
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Siemens SIMATIC S7-1500 CPUs allows remote attackers to read operational timing and communication-load data. The web server serves /ClientArea/RuntimeInfoData.mwsl without properly authenticating the request, returning current and configured cycle-time limits and maximum communication load. Network access to an enabled device web server is sufficient; the documented consequence is limited to disclosure of those operational values.

The record

CVE
CVE-2024-46887
Published
Oct 8, 2024
Updated
Oct 21, 2025
Vendor
Siemens
Product
SIMATIC S7-1500 CPU 1518T-4 PN/DP
Classifications
CWE-288, T1082
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V3.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · SIMATIC S7-1500 CPU 1518T-4 PN/DPversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1515T-2 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIMATIC S7-1500 ET 200pro: CPU 1516PRO F-2 PNversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 Software Controller CPU 1507S F V2version=0 <V21.9.8
Siemens · SIMATIC S7-1500 Software Controller Linux V3version=0 <V31.1.4
Siemens · SIMATIC S7-1500 Software Controller CPU 1508S T V3version=0 <V31.1.4
Siemens · SIPLUS ET 200SP CPU 1510SP-1 PN RAILversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 Software Controller CPU 1507S V3version=0 <V31.1.4
Siemens · SIMATIC ET 200SP CPU 1514SP F-2 PNversion=0 <V3.1.4
Siemens · SIPLUS ET 200SP CPU 1510SP F-1 PN RAILversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1517F-3 PN/DPversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 ET 200pro: CPU 1513PRO F-2 PNversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU S7-1518-4 PN/DP ODKversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 Software Controller CPU 1508S TF V3version=0 <V31.1.4
Siemens · SIMATIC S7-1500 CPU 1517TF-3 PN/DPversion=0 <V3.1.4
Siemens · SIPLUS S7-1500 CPU 1516F-3 PN/DP RAILversion=0 <V2.9.8
Siemens · SIPLUS S7-1500 CPU 1518-4 PN/DP MFPversion=0 <V3.1.4
Siemens · SIMATIC ET 200SP Open Controller CPU 1515SP PC2 - Industrial OSversion=0 <V31.1.4
Siemens · SIMATIC S7-1500 CPU 1516-3 PN/DPversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIPLUS S7-1500 CPU 1516-3 PN/DP RAILversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1518TF-4 PN/DPversion=0 <V3.1.4
Siemens · SIPLUS ET 200SP CPU 1510SP F-1 PNversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1511F-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIPLUS S7-1500 CPU 1518F-4 PN/DPversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1511TF-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIMATIC S7-1500 Software Controller CPU 1508S F V2version=0 <V21.9.8
Siemens · SIMATIC ET 200SP CPU 1514SPT-2 PNversion=0 <V3.1.4
Siemens · SIPLUS ET 200SP CPU 1512SP F-1 PN RAILversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1513-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIMATIC Drive Controller CPU 1507D TFversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1516F-3 PN/DPversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIMATIC S7-1500 ET 200pro: CPU 1513PRO-2 PNversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU S7-1518F-4 PN/DP ODKversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1511T-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIMATIC ET 200SP Open Controller CPU 1515SP PC2 - Windows OSversion=0 <V21.9.8; version=0 <V31.1.4
Siemens · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 Software Controller Linux V2version=0 <*
Siemens · SIPLUS S7-1500 CPU 1511-1 PN T1 RAILversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1511-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIPLUS S7-1500 CPU 1511F-1 PNversion=0 <V2.9.8
Siemens · SIPLUS ET 200SP CPU 1512SP-1 PNversion=0 <V2.9.8
Siemens · SIMATIC S7-PLCSIM Advancedversion=0 <V7.0
Siemens · SIPLUS S7-1500 CPU 1511-1 PN TX RAILversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 Software Controller CPU 1508S F V3version=0 <V31.1.4
Siemens · SIPLUS S7-1500 CPU 1515F-2 PNversion=0 <V2.9.8
Siemens · SIPLUS S7-1500 CPU 1518-4 PN/DPversion=0 <V3.1.4
Siemens · SIMATIC ET 200SP CPU 1510SP F-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1513F-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1516T-3 PN/DPversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1516pro F-2 PNversion=0 <V3.1.4
Siemens · SIPLUS S7-1500 CPU 1513-1 PNversion=0 <V2.9.8
Siemens · SIPLUS S7-1500 CPU 1516F-3 PN/DPversion=0 <V2.9.8
Siemens · SIPLUS S7-1500 CPU 1513F-1 PNversion=0 <V2.9.8
Siemens · SIMATIC ET 200SP CPU 1512SP F-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIPLUS S7-1500 CPU 1516-3 PN/DPversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1518F-4 PN/DPversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 Software Controller CPU 1508S V2version=0 <V21.9.8
Siemens · SIMATIC S7-1500 CPU 1512C-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1516pro-2 PNversion=0 <V3.1.4
Siemens · SIPLUS S7-1500 CPU 1511-1 PNversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1513pro F-2 PNversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1515F-2 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1518-4 PN/DPversion=0 <V3.1.4
Siemens · SIMATIC ET 200SP CPU 1512SP-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIPLUS ET 200SP CPU 1512SP-1 PN RAILversion=0 <V2.9.8
Siemens · SIMATIC Drive Controller CPU 1504D TFversion=0 <V3.1.4
Siemens · SIPLUS S7-1500 CPU 1516-3 PN/DP TX RAILversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1513pro-2 PNversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 Software Controller CPU 1508S V3version=0 <V31.1.4
Siemens · SIPLUS ET 200SP CPU 1510SP-1 PNversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1517T-3 PN/DPversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1511C-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIMATIC S7-1500 Software Controller CPU 1507S V2version=0 <V21.9.8
Siemens · SIMATIC ET 200SP CPU 1514SPT F-2 PNversion=0 <V3.1.4
Siemens · SIMATIC ET 200SP CPU 1514SP-2 PNversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1515-2 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIPLUS S7-1500 CPU 1515F-2 PN RAILversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1518-4 PN/DP MFPversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 Software Controller CPU 1507S F V3version=0 <V31.1.4
Siemens · SIPLUS S7-1500 CPU 1515F-2 PN T2 RAILversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1515TF-2 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIMATIC S7-1500 CPU 1516TF-3 PN/DPversion=0 <V3.1.4
Siemens · SIMATIC S7-1500 ET 200pro: CPU 1516PRO-2 PNversion=0 <V2.9.8
Siemens · SIMATIC S7-1500 CPU 1517-3 PN/DPversion=0 <V3.1.4
Siemens · SIMATIC ET 200SP CPU 1510SP-1 PNversion=0 <V2.9.8; version=0 <V3.1.4
Siemens · SIPLUS ET 200SP CPU 1512SP F-1 PNversion=0 <V2.9.8

Published CVSS scores

5.3Siemens AGCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
6.9Siemens AGCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-288Authentication Bypass Using an Alternate Path or Channel
T1082System Information Discovery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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