Evidence used
- No CISA KEV confirmation is currently recorded.
- The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
- EPSS is 1.51% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2019
CVE-2018-7850High confidence
n/a Modicon M580 Modicon M340 Modicon Quantum Modicon Premium: security vulnerability
Unknown · Modicon M580 Modicon M340 Modicon Quantum Modicon Premium
5.3MediumCVSS 3.1
Scheduled
Patch availableMedium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityMedium→Operational priority:Medium, unchanged from published severity.unchanged
Compensating controls
- Validate the affected product branch and deploy the verified fixed release.
- Restrict the affected network interface to trusted sources where business-safe.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs Unknown Modicon M580 Modicon M340 Modicon Quantum Modicon Premium and falls inside the recorded affected range.
- Verify the installed build against the product-specific fixed version after deployment.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Direct vendor intelligence
1 currentAuthoritative 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.
SEVD-2019-134-11 · CSAF 2.0 · revision 14.0.0 · finalSchneider Electric CPCERTMultiple Vulnerabilities in Modicon Controller Products
The vendor explicitly identifies these products as affected by this CVE.
- Modicon M580 Firmware Versions prior to v2.90 installed on Modicon M580 Controller
- Modicon M340 Firmware Versions prior to v3.10 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-807: Reliance on Untrusted Inputs in a Security Decision vulnerability exists which could cause invalid information displayed in Unity Pro software.
- Remediation
- Version sv4.20 of Modicon M580 includes a fix for this vulnerability and is available for download here: STEP 1: Update software and firmware. • On the engineering workstation, update to EcoStruxure Control Expert v16.0: https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#software-and-firmware • On the Modicon M580 controller, update to firmware SV4.20 or above: https://www.se.com/ww/en/product-range/62098-modicon-m580-epac/#software-and-firmware STEP 2: Update projects in EcoStruxure™ Control Expert by: • Setting up an application password in the project properties • Changing the version of the controller firmware to match the new firmware version of the target controller STEP 3: Rebuild and transfer projects in EcoStruxure™ Control Expert: • Rebuild all current projects
Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
Patch available01
What, why and how
A CWE-807: Reliance on Untrusted Inputs in a Security Decision vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause invalid information displayed in Unity Pro software.
What
A CWE-807: Reliance on Untrusted Inputs in a Security Decision vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause invalid information displayed in Unity Pro software.
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-807: Reliance on Untrusted Inputs in a Security Decision vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause invalid information displayed in Unity Pro software.
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 No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.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 None recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.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 → 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:L/I:N/A:NCommon 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.CLowConfidentiality impact: A successful attack can cause a limited 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.
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
- Modicon M580 Firmware Versions prior to v2.90 installed on Modicon M580 Controller
- Modicon M340 Firmware Versions prior to v3.10 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
- Fixed
- Action
- Version sv4.20 of Modicon M580 includes a fix for this vulnerability and is available for download here: STEP 1: Update software and firmware. • On the engineering workstation, update to EcoStruxure Control Expert v16.0: https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#software-and-firmware • On the Modicon M580 controller, update to firmware SV4.20 or above: https://www.se.com/ww/en/product-range/62098-modicon-m580-epac/#software-and-firmware STEP 2: Update projects in EcoStruxure™ Control Expert by: • Setting up an application password in the project properties • Changing the version of the controller firmware to match the new firmware version of the target controller STEP 3: Rebuild and transfer projects in EcoStruxure™ Control Expert: • Rebuild all current projects
- 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 22 May 2019 · Last source change 5 Aug 2024, 06:37 UTC · CWE not yet assigned
CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source FIRST · tracked since 2026-09-01
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2018-19562
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
View recent updates ↗What changed after publication
- Affected versionsThe structured affected or fixed version information changed.Schneider Electric CPCERT ↗
- Before
- Modicon M580 Modicon M340 Modicon Quantum Modicon Premium · Fixed: No fixed version is explicitly recorded in the structured CVE data.
- After
- Modicon M580 Modicon M340 Modicon Quantum Modicon Premium · Fixed: Version sv4.20 of Modicon M580 includes a fix for this vulnerability and is available for download here: STEP 1: Update software and firmware. • On the engineering workstation, update to EcoStruxure Control Expert v16.0: https://www.se.com/ww/en/product-range/548-ecostruxure-control-expert-unity-pro/#software-and-firmware • On the Modicon M580 controller, update to firmware SV4.20 or above: https://www.se.com/ww/en/product-range/62098-modicon-m580-epac/#software-and-firmware STEP 2: Update projects in EcoStruxure™ Control Expert by: • Setting up an application password in the project properties • Changing the version of the controller firmware to match the new firmware version of the target controller STEP 3: Rebuild and transfer projects in EcoStruxure™ Control Expert: • Rebuild all current projects
- Remediation statusRemediation status changed from Awaiting fix to Patch available.Schneider Electric CPCERT ↗
- Before
- Awaiting fix
- After
- Patch available
- ENISA EUVD mappingEUVD-2018-19562 was added to the official ENISA EUVD mapping for this CVE.ENISA EUVD ↗
- Before
- not recorded
- After
- {"euvdId":"EUVD-2018-19562"}
- Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: schneider-electric.com/SEVD-2019-134-11.schneider-electric.com ↗
- Before
- no authoritative guidance recorded
- After
- vendor advisory: schneider-electric.com/SEVD-2019-134-11
- SeveritySeverity changed from Unknown to Medium.NIST NVD ↗
- Before
- Unknown
- After
- Medium
- CVSS scoreCVSS score changed from not recorded to 5.3 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).NIST NVD ↗
- Before
- not recorded
- After
- 5.3 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
- Catalogue recordCVE added to the BlackTree catalogue.CNA ↗
CVE published
Fixed release recorded from official guidance
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.