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 0.46% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2026
CVE-2025-13901High confidence
Schneider Electric Modicon M241/M251 — Improper Resource Shutdown or Release
Schneider Electric · Modicon M241/M251
6.9MediumCVSS 4.0
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 Schneider Electric Modicon M241/M251 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-2026-069-01 · CSAF 2.0 · revision 1.1.0 · finalSchneider Electric CPCERTImproper Resource Shutdown or Release vulnerability in Multiple Products
The vendor explicitly identifies these products as affected by this CVE.
- Modicon M241 Firmware versions prior to 5.4.13.12 installed on Modicon Controller M241
- Modicon M251 Firmware versions prior to 5.4.13.12 installed on Modicon Controller M251
- Modicon M262 Firmware versions prior to 5.4.10.12 installed on Modicon Controller M262
- Summary
- CWE-404 Improper Resource Shutdown or Release vulnerability exists that could cause partial Denial of Service on Machine Expert protocol when an unauthenticated attacker sends malicious payload to occupy active communication channels.
- Remediation
- Modicon Controller M241 Firmware version 5.4.13.12 delivered with EcoStruxure™ Machine Expert v2.5.0.1 includes a fix for this vulnerability and can be installed through Schneider Electric Software Installer available here: https://www.se.com/ww/en/download/document/ESEMACS10_INSTALLER/ On the engineering workstation install v2.5.0.1 of EcoStruxure™ Machine Expert. For help refer to Schneider Electric Software Installer User Guide available here: https://www.se.com/ww/en/download/document/EIO0000005500/ Update Modicon Controller M241 to the latest Firmware and perform reboot. For instructions refer to Modicon M241 Logic Controller, Programming Guide: https://www.se.com/ww/en/download/document/EIO0000003059/
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
CWE-404 Improper Resource Shutdown or Release vulnerability exists that could cause partial Denial of Service on Machine Expert protocol when an unauthenticated attacker sends malicious payload to occupy active communication channels.
What
CWE-404 Improper Resource Shutdown or Release vulnerability exists that could cause partial Denial of Service on Machine Expert protocol when an unauthenticated attacker sends malicious payload to occupy active communication channels.
Why
The product does not release or incorrectly releases a resource before it is made available for re-use.
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
CWE-404 Improper Resource Shutdown or Release vulnerability exists that could cause partial Denial of Service on Machine Expert protocol when an unauthenticated attacker sends malicious payload to occupy active communication channels.
Why
The product does not release or incorrectly releases a resource before it is made available for re-use.
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 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 → Improper Resource Shutdown or Release → 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
- Not a CVSS 4.0 base metric
- Weakness
?
CWE means Common Weakness Enumeration: a standard category for the underlying weakness. - CWE-404 ↗
CWE-404: Improper Resource Shutdown or Release. The product does not release or incorrectly releases a resource before it is made available for re-use.
- 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:N/VI:N/VA:L/SC:N/SI:N/SA:NCommon 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.VCNoneVulnerable-system confidentiality: No direct loss is represented by this metric.VINoneVulnerable-system integrity: No direct loss is represented by this metric.VALowVulnerable-system availability: A successful attack can cause a limited loss.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.
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
- Modicon Controller M241 Firmware version 5.4.13.12 delivered with EcoStruxure™ Machine Expert v2.5.0.1 includes a fix for this vulnerability and can be installed through Schneider Electric Software Installer available here: https://www.se.com/ww/en/download/document/ESEMACS10_INSTALLER/ On the engineering workstation install v2.5.0.1 of EcoStruxure™ Machine Expert. For help refer to Schneider Electric Software Installer User Guide available here: https://www.se.com/ww/en/download/document/EIO0000005500/ Update Modicon Controller M241 to the latest Firmware and perform reboot. For instructions refer to Modicon M241 Logic Controller, Programming Guide: https://www.se.com/ww/en/download/document/EIO0000003059/
- Workaround
- A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.
04
Evidence and provenance
Published 10 Mar 2026 · Last source change 10 Mar 2026, 17:25 UTC · CWE-404 · Improper Resource Shutdown or Release
CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source FIRST · tracked since 2026-08-14
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2025-208477
Product sourceVendor CSAF · Schneider Electric CPCERT
Remediation sourceVendor CSAF · Schneider Electric CPCERT
CWE sourceCNA
NVD statusNVD enriched
Core structured fields are present and their contributing authorities are shown above.
Material change intelligence
View recent updates ↗What changed after publication
- Affected versionsThe structured affected or fixed version information changed.Schneider Electric CPCERT ↗
- Before
- Versions prior to 5.4.13.12; Versions prior to 5.4.10.12 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
- After
- Versions prior to 5.4.13.12; Versions prior to 5.4.10.12 · Fixed: Modicon Controller M241 Firmware version 5.4.13.12 delivered with EcoStruxure™ Machine Expert v2.5.0.1 includes a fix for this vulnerability and can be installed through Schneider Electric Software Installer available here: https://www.se.com/ww/en/download/document/ESEMACS10_INSTALLER/ On the engineering workstation install v2.5.0.1 of EcoStruxure™ Machine Expert. For help refer to Schneider Electric Software Installer User Guide available here: https://www.se.com/ww/en/download/document/EIO0000005500/ Update Modicon Controller M241 to the latest Firmware and perform reboot. For instructions refer to Modicon M241 Logic Controller, Programming Guide: https://www.se.com/ww/en/download/document/EIO0000003059/
CVE published
Fixed release or patch reference recorded
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.