Security readout for executives and security teams
Plain-English summary
This flaw could let an already privileged attacker load unauthorized firmware onto specific Schneider Electric communication modules. The main business risk is loss of trust in device firmware, potentially affecting industrial control reliability and availability. The sources do not state active exploitation.
Executive priority
Treat this as a targeted OT integrity and availability risk, not a broad internet emergency. Prioritize asset identification, vendor guidance review, and tighter firmware administration controls for affected Schneider Electric modules.
Technical view
CVE-2022-34763 is a CWE-345 insufficient authenticity verification issue in firmware signature validation. Affected products are Schneider Electric BMENOR2200H X80 advanced RTU Communication Module V2.01 and later, and BMENUA0100 OPC UA Modicon Communication Module V1.10 and prior. CVSS 3.1 is 5.9 with high complexity and high privileges required.
Likely exposure
Exposure is limited to environments running the named Schneider Electric communication modules, especially OT networks where privileged users or management systems can interact with firmware update paths. Internet exposure is not established by the provided sources.
Exploitation context
The CVE is not listed as KEV, and the provided sources do not state active exploitation. The CVSS vector indicates network reachability, high attack complexity, high privileges, and no user interaction, with high integrity and availability impact.
Researcher notes
The provided evidence identifies the weakness and affected products but does not include exploit details, proof of active exploitation, or named fixed versions. Avoid broad claims beyond the Schneider Electric advisory and CVE metadata.
Mitigation direction
- Check Schneider Electric advisory SEVD-2022-193-01 for official remediation guidance.
- Inventory BMENOR2200H and BMENUA0100 modules and record firmware versions.
- Restrict firmware management access to trusted administrative networks and accounts.
- Apply only vendor-approved firmware through controlled change management.
- Monitor vendor updates for patches, compensating controls, or revised affected versions.
Validation and detection
- Confirm whether BMENOR2200H modules are V2.01 or later.
- Confirm whether BMENUA0100 modules are V1.10 or prior.
- Review firmware update procedures for signature verification and approval controls.
- Check OT asset logs for unexpected firmware changes or maintenance activity.
- Validate segmentation around module management interfaces.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-345: Exact CWE lookup
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Open ATT&CK lookupCVE-2022-34763 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H0.75.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Insufficient Verification of Data Authenticity
Insufficient Verification of Data Authenticity represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.