Security readout for executives and security teams
Plain-English summary
This CVE describes an authentication weakness in the NSDP implementation on identified NETGEAR JGS516PE and GS116Ev2 switches running v2.6.0.43. If reachable, an attacker could bypass access controls and take full control of the switch, creating risk to network availability and traffic integrity.
Executive priority
Prioritize assessment because the stated worst case is full control of a network switch. Urgency depends on whether affected models and firmware are present and reachable from untrusted users or networks.
Technical view
The source states that NSDP on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 has an authentication issue allowing access-control bypass and full device control. The bundle provides no CVSS score, CWE mapping, patch version, or detailed exposure prerequisites.
Likely exposure
Exposure is most likely where affected NETGEAR switches run v2.6.0.43 and NSDP management or discovery traffic is reachable. The provided sources do not define broader affected versions or whether internet exposure is required.
Exploitation context
CISA KEV is false in the bundle, and no provided source states active exploitation. The described impact is severe, but the source bundle does not provide exploit prevalence, public exploit status, or attack prerequisites beyond the affected NSDP implementation.
Researcher notes
Evidence is limited to the CVE description and NCC Group advisory reference. Treat affected scope, fix availability, and exploitation status as incomplete until vendor guidance and device inventory confirm them.
Mitigation direction
- Inventory NETGEAR JGS516PE and GS116Ev2 switches and record firmware versions.
- Check NETGEAR or advisory guidance for fixed firmware or supported mitigations.
- Restrict switch management and discovery traffic to trusted administration networks.
- Remove affected switches from untrusted or shared network segments where feasible.
- Plan replacement or isolation if vendor-supported remediation is unavailable.
Validation and detection
- Confirm whether any JGS516PE or GS116Ev2 devices run v2.6.0.43.
- Review network paths that can reach switch management or NSDP-related services.
- Check configuration records for management-plane access restrictions.
- Track remediation evidence, including firmware version, isolation controls, or replacement status.
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.
CVE-2020-35231 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://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/CVE reference · x_refsource_MISC
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.