Security readout for executives and security teams
Plain-English summary
CVE-2025-41670 is a local privilege escalation risk in Phoenix Contact systems. A low-privileged user may influence a privileged service by changing configuration or application-related files in user-writable filesystem locations. If successful, they could gain elevated control on the device. The provided sources do not confirm active exploitation.
Executive priority
Prioritize assessment in operational technology environments where shared access or local user accounts exist. The business risk is elevated because compromise could convert limited access into privileged control, but urgency depends on vendor-confirmed affected versions and local access exposure.
Technical view
The issue is categorized as CWE-427, untrusted search path. The service processes data from insufficiently protected locations while running with elevated privileges. CVSS 4.0 score is 8.7. The affected-version data in the bundle is unclear because listed products show version 0.0.0 and defaultStatus unaffected.
Likely exposure
Exposure is most relevant where Phoenix Contact PLCnext or related controller products are deployed and low-privileged users can access writable filesystem paths consumed by privileged services. The supplied source data is insufficient to determine exact vulnerable firmware versions.
Exploitation context
The bundle describes local privilege escalation requiring low privileges and no user interaction. KEV is false, and no provided source states active exploitation or public weaponization. Treat exploit status as unconfirmed.
Researcher notes
Do not assume every listed product/version is vulnerable from this bundle alone. The CVSS vector states network attack vector, while the description emphasizes local low-privileged manipulation. Validate against the CERT@VDE advisory and vendor records before scoping remediation.
Mitigation direction
- Review Phoenix Contact and CERT@VDE guidance for exact affected versions and remediation.
- Restrict low-privileged access to affected controllers and management interfaces.
- Audit service configuration and application paths for low-privilege write access.
- Apply only vendor-approved firmware or configuration changes when available.
- Monitor sensitive configuration paths for unexpected modification.
Validation and detection
- Inventory Phoenix Contact products matching the listed model names.
- Compare device firmware and configuration against the CERT@VDE advisory.
- Check whether privileged services read files from user-writable locations.
- Verify low-privileged accounts cannot modify service-consumed configuration or application files.
- Review logs or file integrity telemetry for suspicious 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.
CWE-427: 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 lookupPrivilege 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-2025-41670 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
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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.
SSVC decision data
CVSS vector scores
2 official scoresWe 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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——CERTVDECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9CERTVDEVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.certvde.com/en/advisories/VDE-2026-050/CVE reference, CERTVDE
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.
Uncontrolled Search Path Element
Uncontrolled Search Path Element represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.