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 1.46% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2023
CVE-2022-45789High confidence
Schneider Electric EcoStruxure Control Expert — Authentication Bypass by Capture-replay
Schneider Electric · EcoStruxure Control Expert
8.1HighCVSS 3.1
Within 7 days
Patch availableHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityHigh→Operational priority:High, 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 EcoStruxure Control Expert 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-2023-010-06 · CSAF 2.0 · revision 7.0.0 · finalSchneider Electric CPCERTEcoStruxure™ Control Expert, EcoStruxure™ Process Expert and Modicon M340, M580 and M580 CPU Safety
The vendor explicitly identifies these products as affected by this CVE.
- EcoStruxure™ Control Expert Versions prior to V16.2 HF003
- Modicon M580 CPU versions prior to SV4.20
- Modicon M580 CPU Safety Versions prior to SV4.21
- Modicon M340 Firmware versions prior to SV3.70 installed on Modicon M340 CPU (part numbers BMXP34*)
- Modicon Momentum Unity M1E Processor Firmware Versions prior to SV2.90 installed on Modicon Momentum Unity M1E Processor (171CBU*)
- Firmware Versions prior to SV2.20 installed on Modicon MC80 (BMKC80)
- Summary
- A CWE-294: Authentication Bypass by Capture-replay vulnerability exists that could cause execution of unauthorized Modbus functions on the controller when hijacking an authenticated Modbus session.
- Remediation
- Firmware SV4.20 includes a fix for this vulnerability and is available for download here:https://www.se.com/ww/en/product-range/62098-modicon-m580-epac/#software-and-firmware
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Patch available01
What, why and how
A CWE-294: Authentication Bypass by Capture-replay vulnerability exists that could cause execution of unauthorized Modbus functions on the controller when hijacking an authenticated Modbus session. Affected Products: EcoStruxure Control Expert (All Versions), EcoStruxure Process Expert (All Versions), Modicon M340 CPU - part numbers BMXP34* (All Versions), Modicon M580 CPU - part numbers BMEP* and BMEH* (All Versions), Modicon M580 CPU Safety - part numbers BMEP58*S and BMEH58*S (All Versions)
What
A CWE-294: Authentication Bypass by Capture-replay vulnerability exists that could cause execution of unauthorized Modbus functions on the controller when hijacking an authenticated Modbus session. Affected Products: EcoStruxure Control Expert (All Versions), EcoStruxure Process Expert (All Versions), Modicon M340 CPU - part numbers BMXP34* (All Versions), Modicon M580 CPU - part numbers BMEP* and BMEH* (All Versions), Modicon M580 CPU Safety - part numbers BMEP58*S and BMEH58*S (All Versions)
Why
A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may bypass an access boundary or take over an account.
What
A CWE-294: Authentication Bypass by Capture-replay vulnerability exists that could cause execution of unauthorized Modbus functions on the controller when hijacking an authenticated Modbus session. Affected Products: EcoStruxure Control Expert (All Versions), EcoStruxure Process Expert (All Versions), Modicon M340 CPU - part numbers BMXP34* (All Versions), Modicon M580 CPU - part numbers BMEP* and BMEH* (All Versions), Modicon M580 CPU Safety - part numbers BMEP58*S and BMEH58*S (All Versions)
Why
A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may bypass an access boundary or take over an account.
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 → Authentication Bypass by Capture-replay → bypass an access boundary or take over an account
- Attack surface
- Network
- Privileges required
- None: unauthenticated exploitation is possible
- User interaction
- None
- Attack complexity
- High: exploitation depends on specific conditions
- 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-294 ↗
CWE-294: Authentication Bypass by Capture-replay. A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).
- 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:H/PR:N/UI:N/S:U/C:H/I:H/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.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.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.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.- Post-exploitation / living off the land
- Stolen credentials, tokens and legitimate administration functions may provide continued access without deploying a large custom toolset.
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
- EcoStruxure™ Control Expert Versions prior to V16.2 HF003
- Modicon M580 CPU versions prior to SV4.20
- Modicon M580 CPU Safety Versions prior to SV4.21
- Modicon M340 Firmware versions prior to SV3.70 installed on Modicon M340 CPU (part numbers BMXP34*)
- Modicon Momentum Unity M1E Processor Firmware Versions prior to SV2.90 installed on Modicon Momentum Unity M1E Processor (171CBU*)
- Firmware Versions prior to SV2.20 installed on Modicon MC80 (BMKC80)
- Fixed
- EcoStruxure™ Control Expert Version V16.2 HF003
- Modicon M580 CPU Version SV4.20
- Modicon M580 CPU Safety Version SV4.21
- Modicon M340 Firmware Version SV3.70 installed on Modicon M340 CPU (part numbers BMXP34*)
- Modicon Momentum Unity M1E Processor Firmware Version SV2.90 installed on Modicon Momentum Unity M1E Processor (171CBU*)
- Firmware Version SV2.20 installed on Modicon MC80 (BMKC80)
- Action
- Firmware SV4.20 includes a fix for this vulnerability and is available for download here:https://www.se.com/ww/en/product-range/62098-modicon-m580-epac/#software-and-firmware
- 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 31 Jan 2023 · Last source change 29 May 2026, 14:09 UTC · CWE-294 · Authentication Bypass by Capture-replay
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-2022-48645
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
View recent updates ↗What changed after publication
- Affected versionsThe structured affected or fixed version information changed.Schneider Electric CPCERT ↗
- Before
- All Versions · 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
- All Versions · Fixed: Firmware SV4.20 includes a fix for this vulnerability and is available for download here:https://www.se.com/ww/en/product-range/62098-modicon-m580-epac/#software-and-firmware
- Affected versionsThe structured affected or fixed version information changed.Schneider Electric CPCERT ↗
- Before
- EcoStruxure™ Control Expert Versions prior to V16.2 HF003; Modicon M580 CPU versions prior to SV4.20; Modicon M580 CPU Safety Versions prior to SV4.21; Modicon MC80 All versions; Modicon M340 Firmware versions prior to SV3.70 installed on Modicon M340 CPU (part numbers BMXP34*); Modicon Momentum Unity M1E Processor Firmware Versions prior to SV2.90 installed on Modicon Momentum Unity M1E Processor (171CBU*) · Fixed: EcoStruxure™ Control Expert Version V16.2 HF003; Modicon M580 CPU Version SV4.20; Modicon M580 CPU Safety Version SV4.21; Modicon M340 Firmware Version SV3.70 installed on Modicon M340 CPU (part numbers BMXP34*); Modicon Momentum Unity M1E Processor Firmware Version SV2.90 installed on Modicon Momentum Unity M1E Processor (171CBU*)
- After
- EcoStruxure™ Control Expert Versions prior to V16.2 HF003; Modicon M580 CPU versions prior to SV4.20; Modicon M580 CPU Safety Versions prior to SV4.21; Modicon M340 Firmware versions prior to SV3.70 installed on Modicon M340 CPU (part numbers BMXP34*); Modicon Momentum Unity M1E Processor Firmware Versions prior to SV2.90 installed on Modicon Momentum Unity M1E Processor (171CBU*); Firmware Versions prior to SV2.20 installed on Modicon MC80 (BMKC80) · Fixed: EcoStruxure™ Control Expert Version V16.2 HF003; Modicon M580 CPU Version SV4.20; Modicon M580 CPU Safety Version SV4.21; Modicon M340 Firmware Version SV3.70 installed on Modicon M340 CPU (part numbers BMXP34*); Modicon Momentum Unity M1E Processor Firmware Version SV2.90 installed on Modicon Momentum Unity M1E Processor (171CBU*); Firmware Version SV2.20 installed on Modicon MC80 (BMKC80)
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.