Security readout for executives and security teams
Plain-English summary
This vulnerability can crash the webserver component of specific Schneider Electric communication modules when they parse JSON content. It affects availability, not confidentiality or integrity, but the listed CVSS vector indicates unauthenticated network access could trigger the condition.
Executive priority
Treat as high priority for OT environments where affected modules support operational visibility or control workflows. The main business risk is service disruption. Prioritize inventory, exposure reduction, and vendor-guided remediation, especially for remotely reachable deployments.
Technical view
CVE-2022-34761 is a CWE-476 NULL pointer dereference in JSON content-type parsing. 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 score is 7.5: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Likely exposure
Organizations using the named Schneider Electric communication modules in OT or industrial networks are the likely exposure group. Exposure is more urgent where module webserver interfaces are reachable from broader enterprise, remote access, or untrusted network segments.
Exploitation context
The provided sources do not indicate CISA KEV listing or active exploitation. The CVSS vector supports remote, unauthenticated denial of service potential, but no exploit status, public exploitability detail, or attack prevalence is provided in the bundle.
Researcher notes
Evidence supports a network-reachable unauthenticated DoS via JSON parsing, caused by a NULL pointer dereference. The bundle does not provide packet details, proof-of-concept status, fixed versions, or specific workaround text, so validation should stay inventory- and exposure-focused.
Mitigation direction
- Check Schneider Electric advisory SEVD-2022-193-01 for vendor-approved fixes or workarounds.
- Inventory BMENOR2200H and BMENUA0100 modules and record exact firmware versions.
- Restrict network access to affected module webserver interfaces where operationally feasible.
- Prioritize remediation for internet-exposed, remotely accessible, or safety-adjacent OT environments.
Validation and detection
- Confirm whether BMENOR2200H modules run V2.01 or later.
- Confirm whether BMENUA0100 modules run V1.10 or prior.
- Map which networks can reach the affected webserver interfaces.
- Review availability monitoring for unexplained webserver restarts or service loss.
- Verify remediation decisions against Schneider Electric’s advisory before maintenance windows.
Public sources used
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-476: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCVE-2022-34761 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
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.