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Full vulnerability report · 2025
CVE-2023-37482High confidence

An unauthenticated remote attacker could exploit this side-channel information to distinguish between valid and invalid usernames

Siemens · SIMATIC Drive Controller CPU 1504D TF

6.9MediumCVSS 4.0
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
SSA-195895 · CSAF 2.0 · revision 3 · interimSiemens ProductCERTSSA-195895: User Enumeration Vulnerability in the Webserver of SIMATIC Products
109 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0)
  • SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0)
  • SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0)
  • SIMATIC ET 200SP CPU 1510SP-1 PN (6ES7510-1DK03-0AB0)
  • SIMATIC ET 200SP CPU 1512SP F-1 PN (6ES7512-1SM03-0AB0)
  • SIMATIC ET 200SP CPU 1512SP-1 PN (6ES7512-1DM03-0AB0)
  • SIMATIC ET 200SP CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0)
  • SIMATIC ET 200SP CPU 1514SP-2 PN (6ES7514-2DN03-0AB0)
  • SIMATIC ET 200SP CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0)
  • SIMATIC ET 200SP CPU 1514SPT-2 PN (6ES7514-2VN03-0AB0)
  • SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)
  • SIMATIC S7-1200 CPU 1211C AC/DC/Rly (6ES7211-1BE40-0XB0)
Summary
The login functionality of the web server in affected devices does not normalize the response times of login attempts. An unauthenticated remote attacker could exploit this side-channel information to distinguish between valid and invalid usernames.
Remediation
Update to V3.1.2 or later version
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2023-41369

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

The login functionality of the web server in affected devices does not normalize the response times of login attempts. An unauthenticated remote attacker could exploit this side-channel information to distinguish between valid and invalid usernames.

What

The login functionality of the web server in affected devices does not normalize the response times of login attempts. An unauthenticated remote attacker could exploit this side-channel information to distinguish between valid and invalid usernames.

Why

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

The login functionality of the web server in affected devices does not normalize the response times of login attempts. An unauthenticated remote attacker could exploit this side-channel information to distinguish between valid and invalid usernames.

Why

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Observable Discrepancy → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Not a CVSS 4.0 base metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-203 ↗

CWE-203: Observable Discrepancy. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Common Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.ATNoneAttack requirements: No additional deployment or execution condition is required.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCLowVulnerable-system confidentiality: A successful attack can cause a limited loss.VINoneVulnerable-system integrity: No direct loss is represented by this metric.VANoneVulnerable-system availability: No direct loss is represented by this metric.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-203
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-W-2025-0312Siemens SIMATIC S7: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Siemens SIMATIC S7 ausnutzen, um Informationen preiszugeben und einen Denial-of-Service-Zustand zu verursachen.

Official advisory
CERT-FR · French · CERTFR-2025-AVI-0113Multiples vulnérabilités dans les produits Siemens

IC IPC DiagMonitor toutes versions. L'éditeur indique que le produit ne bénéficiera pas de correctif de sécurité pour la vulnérabilité CVE-2025-23403. SIMATIC PCS neo V4.0 toutes versions. L'éditeur indique que le produit ne bénéficiera pas de correctif de sécurité pour la vulnérabilité CVE-2024-45386. SIMATIC PCS neo V4.1 versions antérieures à V4.1 Update 2 SIMATIC PCS neo V5.0 versions antérieures à V5.0 Update 1 SIMATIC S7-1200 versions antérieures à V4.7 SIMATIC versions antérieures à V4.7 SIMATIC versions supérieures ou égales àV3.1.0 et versions antérieures à V3.1.2 SIMATIC versions supérieures ou égales àV30.1.0 pour la vulnérabilité CVE-2023-37482 SIMATIC versions supérieures ou égales àV6.0 et versions antérieures à V7.0 SIPROTEC 5 toutes versions pour la vulnérabilité CVE-2024-53648 SIPROTEC 5 toutes versions pour la vulnérabilité CVE-2024-53651 SIPROTEC 5 toutes versions pour la vulnérabilité CVE-2024-54015 SIPROTEC 5 versions antérieures à V9.90 SIPROTEC 5 versions supérieures ou égales àV8.80 et versions antérieures à V9.90 SIPROTEC 5 versions supérieures ou égales àV8.80 pour la vulnérabilité CVE-2024-54015 SIRIUS Safety ES V19 (TIA Portal) versions antérieures à V19 Update 1 SIRIUS Soft Starter ES V19 (TIA Portal) versions antérieures à V19 Update 1 Résumé De multiples vulnérab

Official advisory
NCSC-NL · Dutch · NCSC-2025-0061Kwetsbaarheden verholpen in Siemens producten

De kwetsbaarheden stellen een kwaadwillende mogelijk in staat aanvallen uit te voeren die kunnen leiden tot de volgende categorieën schade: - Denial-of-Service (DoS) - Cross-Site-Scripting (XSS) - Cross-Site Request Forgery (CSRF) - Manipulatie van gegevens - Omzeilen van een beveiligingsmaatregel - Omzeilen van authenticatie - (Remote) code execution (root/admin rechten) - (Remote) code execution (Gebruikersrechten) - Toegang tot systeemgegevens - Toegang tot gevoelige gegevens De kwaadwillende heeft hiervoor toegang nodig tot de productieomgeving. Het is goed gebruik een dergelijke omgeving niet publiek toegankelijk te hebben.

Official advisory
NCSC-NL · Dutch · NCSC-2025-0051Kwetsbaarheden verholpen in Siemens producten

De kwetsbaarheden stellen een kwaadwillende mogelijk in staat aanvallen uit te voeren die kunnen leiden tot de volgende categorieën schade: - Denial-of-Service (DoS) - Cross-Site-Scripting (XSS) - Cross-Site Request Forgery (CSRF) - Manipulatie van gegevens - Omzeilen van een beveiligingsmaatregel - Omzeilen van authenticatie - (Remote) code execution (root/admin rechten) - (Remote) code execution (Gebruikersrechten) - Toegang tot systeemgegevens - Toegang tot gevoelige gegevens De kwaadwillende heeft hiervoor toegang nodig tot de productieomgeving. Het is goed gebruik een dergelijke omgeving niet publiek toegankelijk te hebben.

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0); SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0); SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0); SIMATIC ET 200SP CPU 1510SP-1 PN (6ES7510-1DK03-0AB0); SIMATIC ET 200SP CPU 1512SP F-1 PN (6ES7512-1SM03-0AB0); SIMATIC ET 200SP CPU 1512SP-1 PN (6ES7512-1DM03-0AB0); SIMATIC ET 200SP CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0); SIMATIC ET 200SP CPU 1514SP-2 PN (6ES7514-2DN03-0AB0); SIMATIC ET 200SP CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0); SIMATIC ET 200SP CPU 1514SPT-2 PN (6ES7514-2VN03-0AB0); SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants); SIMATIC S7-1200 CPU 1211C AC/DC/Rly (6ES7211-1BE40-0XB0); SIMATIC S7-1200 CPU 1211C DC/DC/DC (6ES7211-1AE40-0XB0); SIMATIC S7-1200 CPU 1211C DC/DC/Rly (6ES7211-1HE40-0XB0); SIMATIC S7-1200 CPU 1212C AC/DC/Rly (6ES7212-1BE40-0XB0); SIMATIC S7-1200 CPU 1212C DC/DC/DC (6ES7212-1AE40-0XB0); SIMATIC S7-1200 CPU 1212C DC/DC/Rly (6ES7212-1HE40-0XB0); SIMATIC S7-1200 CPU 1212FC DC/DC/DC (6ES7212-1AF40-0XB0); SIMATIC S7-1200 CPU 1212FC DC/DC/Rly (6ES7212-1HF40-0XB0); SIMATIC S7-1200 CPU 1214C AC/DC/Rly (6ES7214-1BG40-0XB0); SIMATIC S7-1200 CPU 1214C DC/DC/DC (6ES7214-1AG40-0XB0); SIMATIC S7-1200 CPU 1214C DC/DC/Rly (6ES7214-1HG40-0XB0); SIMATIC S7-1200 CPU 1214FC DC/DC/DC (6ES7214-1AF40-0XB0); SIMATIC S7-1200 CPU 1214FC DC/DC/Rly (6ES7214-1HF40-0XB0); SIMATIC S7-1200 CPU 1215C AC/DC/Rly (6ES7215-1BG40-0XB0); SIMATIC S7-1200 CPU 1215C DC/DC/DC (6ES7215-1AG40-0XB0); SIMATIC S7-1200 CPU 1215C DC/DC/Rly (6ES7215-1HG40-0XB0); SIMATIC S7-1200 CPU 1215FC DC/DC/DC (6ES7215-1AF40-0XB0); SIMATIC S7-1200 CPU 1215FC DC/DC/Rly (6ES7215-1HF40-0XB0); SIMATIC S7-1200 CPU 1217C DC/DC/DC (6ES7217-1AG40-0XB0); and 79 more
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Update to V3.1.2 or later version
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 11 Feb 2025 · Last source change 8 Apr 2025, 08:19 UTC · CWE-203 · Observable Discrepancy

CVE recordCVE.org · 5.1
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2023-41369
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCNA
NVD statusNVD not scheduled

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2023-41369↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2023-37482 · cve.blacktree.nl