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Full vulnerability report · 2019
CVE-2019-6829High confidence

Schneider Electric SE Modicon M580: Uncaught Exception

Schneider Electric SE · Modicon M580

7.5HighCVSS 3.1
Recommended action
Within 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 29 May 2026

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 1.61% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • 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 Schneider Electric SE Modicon M580 and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  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.

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
2 known affected

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
Summary
CWE-248: Uncaught Exception vulnerability exists which could cause a possible denial of service when writing to specific memory addresses in the controller over Modbus.
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
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-2019-16383

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 actionWithin 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware version prior to V2.90) and Modicon M340 (firmware version prior to V3.10), which could cause a possible denial of service when writing to specific memory addresses in the controller over Modbus.

What

A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware version prior to V2.90) and Modicon M340 (firmware version prior to V3.10), which could cause a possible denial of service when writing to specific memory addresses in the controller over Modbus.

Why

An exception is thrown from a function, but it is not caught.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

What

A CWE-248: Uncaught Exception vulnerability exists in Modicon M580 (firmware version prior to V2.90) and Modicon M340 (firmware version prior to V3.10), which could cause a possible denial of service when writing to specific memory addresses in the controller over Modbus.

Why

An exception is thrown from a function, but it is not caught.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

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

CISA Vulnrichment records proof-of-concept exploitation in its SSVC data. BlackTree has not independently executed or validated exploit material.

Likely attack path
a network path → Uncaught Exception → disrupt the affected service
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: a standard category for the underlying weakness.
CWE-248 ↗

CWE-248: Uncaught Exception. An exception is thrown from a function, but it is not caught.

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:N/I:N/A:H

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.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
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.
NetworkUnauthenticatedDenial of serviceCWE-248Public exploit reference
A

Official authority intelligence

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

CISA · English · ICSA-25-114-01Schneider Electric Modicon Controllers (Update A)

An uncaught exception vulnerability exists which could cause a possible denial of service when writing to specific memory addresses in the controller over Modbus.

Official advisory ↗
CERT-FR · French · CERTFR-2019-AVI-384Multiples vulnérabilités dans les produits Schneider Electric

.org/CVERecord?id=CVE-2018-7857 Référence CVE CVE-2019-68067 https://www.cve.org/CVERecord?id=CVE-2019-68067 Référence CVE CVE-2019-68077 https://www.cve.org/CVERecord?id=CVE-2019-68077 Référence CVE CVE-2019-6808 https://www.cve.org/CVERecord?id=CVE-2019-6808 Référence CVE CVE-2019-6809 https://www.cve.org/CVERecord?id=CVE-2019-6809 Référence CVE CVE-2019-6810 https://www.cve.org/CVERecord?id=CVE-2019-6810 Référence CVE CVE-2019-6813 https://www.cve.org/CVERecord?id=CVE-2019-6813 Référence CVE CVE-2019-6826 https://www.cve.org/CVERecord?id=CVE-2019-6826 Référence CVE CVE-2019-6828 https://www.cve.org/CVERecord?id=CVE-2019-6828 Référence CVE CVE-2019-6829 https://www.cve.org/CVERecord?id=CVE-2019-6829 Référence CVE CVE-2019-6830 https://www.cve.org/CVERecord?id=CVE-2019-6830 Référence CVE CVE-2019-6831 https://www.cve.org/CVERecord?id=CVE-2019-6831 Référence CVE CVE-2019-6832 https://www.cve.org/CVERecord?id=CVE-2019-6832 Référence CVE CVE-2019-6833 https://www.cve.org/CVERecord?id=CVE-2019-6833 Référence CVE CVE-2019-6834 https://www.cve.org/CVERecord?id=CVE-2019-6834 Référence CVE CVE-2019-8258 https://www.cve.org/CVERecord?id=CVE-2019-8258 Référence CVE CVE-2019-8259 https://www.cve.org/CVERecord?id=CVE-2019-8259 Référence CVE CVE-2019-8260 https://www.cve.org/CVERecord?id=CVE-2019-8260 Ré

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2019-009521Modicon M580 および Modicon M340 における例外的な状態の処理に関する脆弱性

Modicon M580 および Modicon M340 には、例外的な状態の処理に関する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.
Patch available
Affected
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 17 Sept 2019 · Last source change 29 May 2026, 14:35 UTC · CWE-248 · Uncaught Exception

CVE recordCVE.org · 5.2
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-2019-16383
Product sourceVendor CSAF · Schneider Electric CPCERT
Remediation sourceVendor CSAF · Schneider Electric CPCERT
CWE sourceCNA
NVD statusNVD modified after enrichment

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

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    firmware version prior to V2.90; firmware version prior to V3.10 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    firmware version prior to V2.90; firmware version prior to V3.10 · 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
    Schneider Electric CPCERT ↗
  2. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    Schneider Electric CPCERT ↗
  3. ENISA EUVD mappingEUVD-2019-16383 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2019-16383"}
    ENISA EUVD ↗
  4. Vendor guidanceAuthoritative vendor guidance changed: added vendor advisory: schneider-electric.com/SEVD-2019-134-11.
    Before
    no authoritative guidance recorded
    After
    vendor advisory: schneider-electric.com/SEVD-2019-134-11
    schneider-electric.com ↗
  5. CVSS scoreCVSS scoring authority changed from CISA ADP to NIST NVD; the displayed base score remained 7.5.
    Before
    7.5 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
    After
    7.5 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
    NIST NVD ↗
  6. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2019-16383↗Schneider Electric CPCERT security advisory↗CISA Vulnrichment SSVC evidence↗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-2019-6829 · cve.blacktree.nl