Security readout for executives and security teams
Plain-English summary
CVE-2026-4620 affects NEC Platforms Aterm WX1500HP and WX3600HP devices before Ver. 1.4.2. It is an OS command injection issue that could let a network attacker run commands on the device. The published score is high, but exploitation requires high privileges and user interaction according to the CVSS vector.
Executive priority
Prioritize remediation for affected NEC Aterm devices, especially if they are reachable from untrusted networks or used in sensitive locations. The issue can affect the device’s confidentiality, integrity, and availability, but exploitation appears constrained by privileges and interaction requirements based on available data.
Technical view
The issue is CWE-78 OS command injection in NEC Platforms Aterm Series. Affected products are Aterm WX1500HP and WX3600HP before Ver. 1.4.2. CVSS v4.0 is 7.1: network attack vector, high complexity, high privileges required, user interaction required, and high impact to device confidentiality, integrity, and availability.
Likely exposure
Organizations or users operating Aterm WX1500HP or WX3600HP on firmware before Ver. 1.4.2 are potentially exposed. Risk is most relevant where device administration or vulnerable network services are reachable by untrusted users. No CPE data is provided in the source bundle.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not listed as KEV in the bundle. The CVSS vector indicates exploitation is network-based but constrained by high privileges, high complexity, and user interaction. No exploit details are provided in the public source bundle.
Researcher notes
Public details are limited. The bundle identifies the weakness class, affected models, version boundary, CVSS vector, and NEC advisory, but not root cause, vulnerable endpoint, exploitability details, or detection indicators. Avoid assuming broader Aterm impact beyond the named models.
Mitigation direction
- Identify any Aterm WX1500HP or WX3600HP devices in the environment.
- Upgrade affected devices to Ver. 1.4.2 or follow NEC’s latest advisory guidance.
- Limit administrative access to trusted networks and users.
- Monitor NEC security notices for updated remediation instructions.
Validation and detection
- Confirm device model is WX1500HP or WX3600HP.
- Check firmware version and flag any version before 1.4.2.
- Review exposure of device management interfaces to untrusted networks.
- Document remediation status and firmware evidence for each device.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-4620 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
- 7.1 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/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.
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:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
7.1HighVector: CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://jpn.nec.com/security-info/secinfo/nv26-001_en.htmlCVE reference
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.