Evidence used
- No CISA KEV confirmation is currently recorded.
- EPSS is 0.97% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2023
CVE-2022-47393High confidence
CODESYS: Multiple products prone to improperly restricted memory operations
CODESYS · CODESYS Control RTE (SL)
6.5MediumCVSS 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 CODESYS CODESYS Control RTE (SL) 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-2023-192-04 · CSAF 2.0 · revision 8.1.0 · finalSchneider Electric CPCERTCODESYS Runtime Vulnerabilities
The vendor explicitly identifies these products as affected by this CVE.
- Schneider Electric HMISCU Controller All versions prior to v6.3.1
- Schneider Electric Modicon Controller M241 All versions prior to v5.2.11.18
- Schneider Electric Modicon Controller M251 All Versions prior to v5.2.11.18
- Schneider Electric Modicon Controller M262 All versions prior to v5.2.8.12
- Schneider Electric Modicon Controller M258 All Versions
- Schneider Electric Modicon Controller LMC058 All Versions
- Schneider Electric PacDrive 3 Controllers: LMC Eco/Pro/Pro2 All versions prior to v1.76.14.1
- Schneider Electric SoftSPS embedded in EcoStruxure™ Machine Expert All Versions prior to Machine Expert v2.2
- Schneider Electric Vijeo Designer embedded in EcoStruxure™ Machine Expert All versions prior to v6.3.1
- Schneider Electric Harmony (Formerly Magelis) HMIGK/HMIGTO/HMIGTU/HMIGTUX/HMISTU series All Versions prior to V6.3 HF3
- Schneider Electric Easy Harmony HMIET6/HMIFT6 Magelis HMIGXU all versions prior to v2.0 HF2
- Schneider Electric Magelis XBT series All Versions
- Summary
- After successful authentication, specific crafted communication requests can cause the CmpFiletransfer component to dereference addresses provided by the request for internal read access, which can lead to a denial-of-service situation.
- Remediation
- Version 6.3.1 of Vijeo Designer includes a fix for this vulnerability and can be updated through the Schneider Electric Software Update (SESU) application. https://www.se.com/ww/en/product-range/1054-vijeodesigner-hmi-software/#software-and-firmware On the engineering workstation, update to v6.3.1 of Vijeo Designer. In order to complete the update, connect to Harmony HMI and download the project file using Vijeo Designer v6.3.1.
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
An authenticated, remote attacker may use a Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple versions of multiple CODESYS products to force a denial-of-service situation.
What
An authenticated, remote attacker may use a Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple versions of multiple CODESYS products to force a denial-of-service situation.
Why
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
How
An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
An authenticated, remote attacker may use a Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple versions of multiple CODESYS products to force a denial-of-service situation.
Why
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
How
An attacker operating through a network path may attempt exploitation with low privileges. 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 → Improper Restriction of Operations within the Bounds of a Memory Buffer → cause the confidentiality, integrity or availability impact described by the vendor
- Attack surface
- Network
- Privileges required
- Low: a basic authenticated account is required
- 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-119 ↗
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer. The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
- 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:L/UI:N/S:U/C:N/I:N/A:HCommon 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.PRLowPrivileges required: The attacker needs basic user-level 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.
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
- Schneider Electric HMISCU Controller All versions prior to v6.3.1
- Schneider Electric Modicon Controller M241 All versions prior to v5.2.11.18
- Schneider Electric Modicon Controller M251 All Versions prior to v5.2.11.18
- Schneider Electric Modicon Controller M262 All versions prior to v5.2.8.12
- Schneider Electric Modicon Controller M258 All Versions
- Schneider Electric Modicon Controller LMC058 All Versions
- Schneider Electric PacDrive 3 Controllers: LMC Eco/Pro/Pro2 All versions prior to v1.76.14.1
- Schneider Electric SoftSPS embedded in EcoStruxure™ Machine Expert All Versions prior to Machine Expert v2.2
- Schneider Electric Vijeo Designer embedded in EcoStruxure™ Machine Expert All versions prior to v6.3.1
- Schneider Electric Harmony (Formerly Magelis) HMIGK/HMIGTO/HMIGTU/HMIGTUX/HMISTU series All Versions prior to V6.3 HF3
- Schneider Electric Easy Harmony HMIET6/HMIFT6 Magelis HMIGXU all versions prior to v2.0 HF2
- Schneider Electric Magelis XBT series All Versions
- Schneider Electric Easy Modicon M310 All versions prior to v3.1.5.82
- Schneider Electric Vijeo Designer runtime Versions Prior to 6.3 SP2 installed on Schneider Electric Harmony iPC series
- Schneider Electric Vijeo Designer runtime Versions Prior to 6.3 SP2 installed on Schneider Electric Harmony P6 series
- Fixed
- Schneider Electric HMISCU Controller 6.3.1
- Schneider Electric Modicon Controller M241 5.2.11.18
- Schneider Electric Modicon Controller M251 5.2.11.18
- Schneider Electric Modicon Controller M262 5.2.8.12
- Schneider Electric PacDrive 3 Controllers: LMC Eco/Pro/Pro2 1.76.14.1
- Schneider Electric SoftSPS embedded in EcoStruxure™ Machine Expert 2.2
- Schneider Electric Vijeo Designer embedded in EcoStruxure™ Machine Expert 6.3.1
- Schneider Electric Harmony (Formerly Magelis) HMIGK/HMIGTO/HMIGTU/HMIGTUX/HMISTU series iPC series with Vijeo Designer runtime V6.3 HF3
- Vijeo Designer Basic v2.0 HF2
- Schneider Electric Vijeo Designer runtime Version 6.3 SP2 installed on Schneider Electric Harmony iPC series
- Schneider Electric Vijeo Designer runtime Version 6.3 SP2 installed on Schneider Electric Harmony P6 series
- Schneider Electric Easy Modicon M310 version v3.1.5.82
- Action
- Version 6.3.1 of Vijeo Designer includes a fix for this vulnerability and can be updated through the Schneider Electric Software Update (SESU) application. https://www.se.com/ww/en/product-range/1054-vijeodesigner-hmi-software/#software-and-firmware On the engineering workstation, update to v6.3.1 of Vijeo Designer. In order to complete the update, connect to Harmony HMI and download the project file using Vijeo Designer v6.3.1.
- 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 15 May 2023 · Last source change 5 Mar 2025, 18:59 UTC · CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer
CVE recordCVE.org · 5.1
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-2022-50160
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
- V0.0.0.0 < V3.5.19.0 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
- After
- V0.0.0.0 < V3.5.19.0 · Fixed: Version 6.3.1 of Vijeo Designer includes a fix for this vulnerability and can be updated through the Schneider Electric Software Update (SESU) application. https://www.se.com/ww/en/product-range/1054-vijeodesigner-hmi-software/#software-and-firmware On the engineering workstation, update to v6.3.1 of Vijeo Designer. In order to complete the update, connect to Harmony HMI and download the project file using Vijeo Designer v6.3.1.
- Remediation statusRemediation status changed from Awaiting fix to Patch available.Schneider Electric CPCERT ↗
- Before
- Awaiting fix
- After
- Patch available
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.