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Full vulnerability report · 2019
CVE-2019-6806High confidence

n/a Modicon M580 Modicon M340 Modicon Quantum Modicon Premium: security vulnerability

Unknown · Modicon M580 Modicon M340 Modicon Quantum Modicon Premium

7.5HighCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 5 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 4 Aug 2024

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 2.30% for the current model date.

Compensating controls

  • Apply the linked authoritative mitigation while planning the permanent fix.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Unknown Modicon M580 Modicon M340 Modicon Quantum Modicon Premium and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 5 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

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
SEVD-2019-134-11 · CSAF 2.0 · revision 14.0.0 · finalSchneider Electric CPCERTMultiple Vulnerabilities in Modicon Controller Products
5 known affected

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

  • Modicon M580 Firmware All Versions installed with Modicon M580 Controller
  • Modicon M340 Firmware All Versions installed on Modicon M340 Controller
  • Modicon Quantum Firmware All Versions installed on Modicon Quantum Controller
  • Modicon Quantum Safety Firmware All Versions installed on Modicon Quantum Safety Controller
  • Modicon Premium Firmware All Versions installed on Modicon Premium Controller
Summary
CWE-200: Information Exposure vulnerability exists which could cause the disclosure of SNMP information when reading variables in the controller using Modbus.
Remediation
It is recommended to apply the following mitigations to reduce the risk of exploitation: • Set up an application password in the project properties • Set up network segmentation and implement a firewall to block all unauthorized access to port 502/TCP • Configure the Access Control List following the recommendations of the user manuals: https://www.se.com/ww/en/download/document/EIO0000001578/ • Set up a secure communication according to the following guideline “Modicon Controllers Platform Cyber Security Reference Manual,” in chapter “Setup secured communications”: https://www.se.com/ww/en/download/document/EIO0000001999/ NOTE: Use a BMENOC module and follow the instructions to configure IPSEC feature as described in the guideline “Modicon M580 - BMENOC03.1 Ethernet Communications Schneider Electric Security Notification Module, Installation and Configuration Guide” in the chapter “Configuring IPSEC communications”: https://www.se.com/ww/en/download/document/HRB62665/ OR • Use a BMENUA0100 module and follow the instructions to configure IPSEC feature as described in the chapter “Configuring the BMENUA0100 Cybersecurity Settings”: https://www.se.com/ww/en/download/document/PHA83350 OR • Consider using external firewall devices such as EAGLE40-07 from Belden to establish VPN connections for M340 and M580 architectures. For more details refer to the chapter “How to protect M580 and M340 architectures with EAGLE40 using VPN”: https://www.se.com/ww/en/download/document/EIO0000001999/ • Ensure the M580 CPU is running with the memory protection activated by configuring the input bit to a physical input, for more details refer to the following guideline “Modicon Controllers Platform Cyber Security Reference Manual”, “CPU Memory Protection section”: https://www.schneider-electric.com/en/download/document/EIO0000001999/ NOTE: The CPU memory protection cannot be configured with M580 Hot Standby CPUs. In such cases, use IPsec encrypted communication.
Optional official sources

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

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

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-2019-16360

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 actionPatch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 5 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

A CWE-200: Information Exposure vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause the disclosure of SNMP information when reading variables in the controller using Modbus.

What

A CWE-200: Information Exposure vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause the disclosure of SNMP information when reading variables in the controller using Modbus.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

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

A CWE-200: Information Exposure vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause the disclosure of SNMP information when reading variables in the controller using Modbus.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

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.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → vulnerable operation → 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
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration.
CWE not yet assigned
CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Common Vulnerability Scoring System 3.1: 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.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: 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.
NetworkUnauthenticatedPublic exploit reference
A

Official authority intelligence

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

CERT-FR · French · CERTFR-2019-AVI-312Multiples vulnérabilités dans les produits Schneider Electric

.cve.org/CVERecord?id=CVE-2018-7846 Référence CVE CVE-2018-7847 https://www.cve.org/CVERecord?id=CVE-2018-7847 Référence CVE CVE-2018-7848 https://www.cve.org/CVERecord?id=CVE-2018-7848 Référence CVE CVE-2018-7849 https://www.cve.org/CVERecord?id=CVE-2018-7849 Référence CVE CVE-2018-7850 https://www.cve.org/CVERecord?id=CVE-2018-7850 Référence CVE CVE-2018-7853 https://www.cve.org/CVERecord?id=CVE-2018-7853 Référence CVE CVE-2018-7854 https://www.cve.org/CVERecord?id=CVE-2018-7854 Référence CVE CVE-2018-7856 https://www.cve.org/CVERecord?id=CVE-2018-7856 Référence CVE CVE-2018-7857 https://www.cve.org/CVERecord?id=CVE-2018-7857 Référence CVE CVE-2019-6806 https://www.cve.org/CVERecord?id=CVE-2019-6806 Référence CVE CVE-2019-6807 https://www.cve.org/CVERecord?id=CVE-2019-6807 Référence CVE CVE-2019-6808 https://www.cve.org/CVERecord?id=CVE-2019-6808 Référence CVE CVE-2019-6819 https://www.cve.org/CVERecord?id=CVE-2019-6819 Référence CVE CVE-2019-6822 https://www.cve.org/CVERecord?id=CVE-2019-6822 Référence CVE CVE-2019-6827 https://www.cve.org/CVERecord?id=CVE-2019-6827 Gestion détaillée du document le 09 juillet 2019 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2019-004753複数の Modicon 製品における脆弱性

複数の Modicon 製品には、不特定の脆弱性が存在します。

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.
Fix availability varies by product
Affected
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
It is recommended to apply the following mitigations to reduce the risk of exploitation: • Set up an application password in the project properties • Set up network segmentation and implement a firewall to block all unauthorized access to port 502/TCP • Configure the Access Control List following the recommendations of the user manuals: https://www.se.com/ww/en/download/document/EIO0000001578/ • Set up a secure communication according to the following guideline “Modicon Controllers Platform Cyber Security Reference Manual,” in chapter “Setup secured communications”: https://www.se.com/ww/en/download/document/EIO0000001999/ NOTE: Use a BMENOC module and follow the instructions to configure IPSEC feature as described in the guideline “Modicon M580 - BMENOC03.1 Ethernet Communications Schneider Electric Security Notification Module, Installation and Configuration Guide” in the chapter “Configuring IPSEC communications”: https://www.se.com/ww/en/download/document/HRB62665/ OR • Use a BMENUA0100 module and follow the instructions to configure IPSEC feature as described in the chapter “Configuring the BMENUA0100 Cybersecurity Settings”: https://www.se.com/ww/en/download/document/PHA83350 OR • Consider using external firewall devices such as EAGLE40-07 from Belden to establish VPN connections for M340 and M580 architectures. For more details refer to the chapter “How to protect M580 and M340 architectures with EAGLE40 using VPN”: https://www.se.com/ww/en/download/document/EIO0000001999/ • Ensure the M580 CPU is running with the memory protection activated by configuring the input bit to a physical input, for more details refer to the following guideline “Modicon Controllers Platform Cyber Security Reference Manual”, “CPU Memory Protection section”: https://www.schneider-electric.com/en/download/document/EIO0000001999/ NOTE: The CPU memory protection cannot be configured with M580 Hot Standby CPUs. In such cases, use IPsec encrypted communication.
04

Evidence and provenance

Published 22 May 2019 · Last source change 4 Aug 2024, 20:31 UTC · CWE not yet assigned

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2019-16360
Product sourceVendor CSAF · Schneider Electric CPCERT
Remediation sourceVendor CSAF · Schneider Electric CPCERT
CWE sourceUnavailable
NVD statusNVD modified after enrichment

Missing structured fields: CWE classification, affected product. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. ENISA EUVD mappingEUVD-2019-16360 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2019-16360"}
    ENISA EUVD ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: added mitigation: schneider-electric.com/SEVD-2019-134-11; added remediation: schneider-electric.com/SEVD-2019-134-11.
    Before
    no authoritative guidance recorded
    After
    mitigation: schneider-electric.com/SEVD-2019-134-11 · remediation: schneider-electric.com/SEVD-2019-134-11
    schneider-electric.com ↗
  3. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    schneider-electric.com ↗
  4. Public exploit evidencePublic exploit evidence changed from No public exploit to Public exploit reference.
    Before
    No public exploit
    After
    Public exploit reference
    talosintelligence.com ↗
  5. SeveritySeverity changed from Unknown to High.
    Before
    Unknown
    After
    High
    NIST NVD ↗
  6. CVSS scoreCVSS score changed from not recorded to 7.5 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
    Before
    not recorded
    After
    7.5 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
    NIST NVD ↗
  7. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Mitigation reference recorded
ENISA EUVD · EUVD-2019-16360↗Vendor CSAF · Schneider Electric CPCERT↗CVE authority or vendor reference↗Public exploit 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-2019-6806 · cve.blacktree.nl