Security readout for executives and security teams
Plain-English summary
This CVE describes a flaw in the web administration panel of specific NETGEAR ProSAFE Plus switches. An attacker who can reach the admin interface may manipulate the access-control whitelist. Business risk depends mainly on whether affected switch management panels are exposed beyond trusted administration networks.
Executive priority
Treat this as a targeted network-device hygiene issue. Prioritize systems where switch administration interfaces are exposed outside restricted management networks or where whitelist integrity supports operational access control.
Technical view
CVE-2020-35227 is reported as a buffer overflow in the access control section of NETGEAR JGS516PE/GS116Ev2 v2.6.0.43. The issue involves the checkedList parameter to the delete command and can inject IP addresses into the whitelist. The provided sources do not include CVSS, CWE, or fixed-version details.
Likely exposure
Exposure is likely limited to environments running NETGEAR JGS516PE or GS116Ev2 firmware v2.6.0.43 with the administration web panel reachable by an attacker.
Exploitation context
The source bundle does not report active exploitation, and the CVE is not in KEV. Public information only supports that the vulnerability was disclosed by NCC Group and affects the administration web panel.
Researcher notes
Evidence is narrow: the bundle identifies affected models, firmware, parameter, and behavior, but not CVSS, CWE, exploit status, authentication context, or vendor fix level. Avoid assuming broader NETGEAR impact without vendor confirmation.
Mitigation direction
- Inventory NETGEAR JGS516PE and GS116Ev2 switches and record firmware versions.
- Restrict administration web panel access to trusted management networks only.
- Check NETGEAR guidance for corrected firmware or vendor-recommended mitigation.
- Review whitelist configuration for unexpected or unauthorized IP entries.
- Monitor management interface access logs where available.
Validation and detection
- Confirm whether any switch is running firmware v2.6.0.43.
- Verify the admin web panel is not internet-accessible or broadly reachable.
- Inspect access-control whitelist entries for unauthorized additions.
- Review change records for recent switch access-control modifications.
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-2020-35227 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.