Security readout for executives and security teams
Plain-English summary
CVE-2022-34762 affects specific Schneider Electric Modicon communication modules used in industrial environments. A path traversal flaw could allow unauthorized firmware image loading if unsigned images are added to the firmware image path. The issue is medium severity, but impact can be serious where these modules support operational technology availability or integrity.
Executive priority
Treat as a targeted operational technology risk, not a broad internet emergency. Prioritize sites using affected Schneider modules where firmware management is reachable by many administrators or crosses trust boundaries.
Technical view
The vulnerability is CWE-22 path traversal in 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: network-reachable, high complexity, high privileges required, no user interaction, with high integrity and availability impact.
Likely exposure
Exposure is likely limited to organizations running the listed Schneider Electric communication modules, especially if firmware-management functions are reachable over network paths by privileged users.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires high privileges and high complexity, but successful abuse could affect firmware integrity and device availability.
Researcher notes
Evidence supports path traversal leading to unauthorized firmware image loading, with integrity and availability impact. The bundle does not include vendor patch details, workaround specifics, exploit proof, or active exploitation confirmation, so avoid assumptions beyond the cited affected products and CVSS vector.
Mitigation direction
- Review Schneider Electric advisory SEVD-2022-193-01 for supported remediation guidance.
- Do not stage unsigned firmware images in firmware image paths.
- Restrict privileged access to firmware-management functions.
- Limit network reachability to industrial management networks only.
- Monitor firmware changes and device availability events.
Validation and detection
- Inventory BMENOR2200H and BMENUA0100 modules and record firmware versions.
- Compare findings against the affected version ranges in the CVE description.
- Review change records for unexpected firmware image staging or loading.
- Verify privileged firmware-management access is tightly assigned and logged.
- Check Schneider Electric guidance for any documented fixed versions or procedures.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-34762 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.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.