Security readout for executives and security teams
Plain-English summary
This vulnerability could let a malicious user bypass authorization checks on Schneider Electric Modicon PLC-related CGI functions. For executives, the concern is unauthorized interaction with industrial control equipment, not ordinary IT data theft. The source bundle does not provide a CVSS score, confirmed exploitation, or detailed remediation status.
Executive priority
Prioritize assessment in OT environments because authorization bypass on PLC management functions can affect operational control paths. Urgency depends on whether affected devices are reachable beyond tightly controlled engineering networks. No active exploitation evidence is supplied.
Technical view
CVE-2018-7760 is described as an authorization bypass affecting Schneider Electric Modicon M340, Premium, Quantum PLCs, and BMXNOR0201. Requests to CGI functions can bypass authorization. The bundle does not include exploit prerequisites, authentication state details, affected firmware ranges beyond “all,” or validated fixes.
Likely exposure
Likely exposure is Schneider Electric Modicon M340, Premium, Quantum PLCs, or BMXNOR0201 assets with reachable web or CGI management functions. Risk is higher where OT management paths are broadly reachable from enterprise networks, remote access paths, or untrusted segments.
Exploitation context
The provided bundle does not show CISA KEV listing or any cited evidence of active exploitation. It only states that CGI requests allow malicious users to bypass authorization. Treat exploitation status as unconfirmed from the supplied sources.
Researcher notes
Evidence is limited to the CVE description and Schneider advisory reference. The bundle lacks CVSS, CWE, detailed firmware ranges, exploit preconditions, and patch details. Avoid assuming internet exploitation or a specific fix without reviewing Schneider’s advisory.
Mitigation direction
- Review Schneider Electric advisory SEVD-2018-081-02 for vendor-confirmed remediation guidance.
- Identify affected Modicon PLCs and BMXNOR0201 modules in OT asset inventories.
- Restrict PLC web and CGI management access to trusted administrative networks.
- Block untrusted network paths to affected device management interfaces.
- Prioritize compensating controls if vendor patch status cannot be confirmed.
Validation and detection
- Confirm whether any listed Schneider Modicon products exist in the environment.
- Verify management interfaces are not reachable from untrusted or external networks.
- Review logs for unexpected access to PLC CGI functions, where logging exists.
- Compare device firmware and configuration against Schneider’s advisory guidance.
- Document unresolved assets where version or exposure cannot be verified.
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.
Privilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-7760 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.schneider-electric.com/en/download/document/SEVD-2018-081-02/CVE reference · x_refsource_CONFIRM
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.