Security readout for executives and security teams
Plain-English summary
Schneider Electric MGE UPS and STS systems using the 66074 MGE Network Management Card Transverse may allow a remote attacker to bypass web authorization and gain full device access. These systems can support critical power infrastructure, so exposed management interfaces deserve urgent review even though no CVSS score is provided.
Executive priority
Prioritize discovery and exposure reduction for facilities using legacy MGE power systems. Business urgency is highest where UPS management interfaces are reachable beyond a tightly controlled management network.
Technical view
CVE-2018-7243 affects the SF66074 MGE Network Management Card Transverse installed in specified MGE UPS products. The integrated web server on TCP 80/443 could allow remote authorization bypass and full device access. The public bundle does not include CVSS, CWE, fixed versions, or patch details.
Likely exposure
Exposure is likely where affected SF66074 cards manage listed MGE UPS or STS products and their web interfaces are reachable over TCP 80 or 443, especially from corporate, vendor, or internet-accessible networks.
Exploitation context
The sources describe remote authorization bypass against the integrated web server. The CVE is not marked as CISA KEV, and the provided bundle contains no cited evidence of active exploitation or public weaponization.
Researcher notes
Evidence is limited to the CVE description and Schneider reference. The bundle does not name a patch, affected firmware range, CVSS vector, CWE, proof of concept, or exploitation evidence. Treat remediation details as vendor-dependent.
Mitigation direction
- Review Schneider advisory SEVD-2018-074-01 for official remediation guidance.
- Inventory MGE UPS and STS systems for SF66074 cards.
- Restrict web management access to trusted administration networks only.
- Remove internet exposure for affected management interfaces.
- Monitor affected devices for unexpected administrative changes.
Validation and detection
- Confirm whether listed MGE products use the SF66074 card.
- Identify whether TCP 80 or 443 management interfaces are enabled.
- Determine if those interfaces are reachable from untrusted networks.
- Compare device state against Schneider advisory guidance.
- Review administrative logs for unexplained access or configuration changes.
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-2018-7243 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-2018-074-01/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.