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CVE Record

CVE-2020-26919: NETGEAR JGS516PE devices before 2.6.0.43 are affected by lack of access control at the function level.

NETGEAR JGS516PE devices before 2.6.0.43 are affected by lack of access control at the function level.

CriticalCVSS 9.8Known exploitedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

This is a critical access-control flaw in NETGEAR JGS516PE switches before firmware 2.6.0.43. An unauthenticated network attacker could reach functions they should not be able to access, creating potential business risk to confidentiality, integrity, and availability of network infrastructure.

Executive priority

Treat this as urgent for any affected switch still in service. It is critical severity, remotely reachable, requires no authentication, and appears in CISA KEV, which elevates patching urgency beyond routine maintenance.

Technical view

CVE-2020-26919 is missing function-level access control in NETGEAR JGS516PE devices before 2.6.0.43. The CVSS 3.1 score is 9.8, with network attack vector, no privileges, no user interaction, and high impact to confidentiality, integrity, and availability.

Likely exposure

Exposure is likely limited to organizations running NETGEAR JGS516PE switches with firmware older than 2.6.0.43, especially where management services are reachable from untrusted networks.

Exploitation context

CISA lists CVE-2020-26919 in the Known Exploited Vulnerabilities catalog, so active exploitation is supported by a cited government source. The provided bundle does not include exploit mechanics or observed campaign details.

Researcher notes

The source bundle names the affected model and fixed-version threshold but does not provide CWE mapping, CPE entries, exploit details, or workaround specifics. Validate exposure through asset inventory, firmware review, and management-plane reachability rather than assumptions.

Mitigation direction

  • Upgrade NETGEAR JGS516PE devices to firmware 2.6.0.43 or later.
  • Review NETGEAR advisory for current vendor guidance and supported firmware.
  • Restrict switch management access to trusted administrative networks only.
  • Remove any internet-exposed management access where present.
  • Prioritize remediation for devices supporting critical business networks.

Validation and detection

  • Inventory NETGEAR JGS516PE switches across offices, data rooms, and remote sites.
  • Verify installed firmware versions against the 2.6.0.43 fixed threshold.
  • Confirm management interfaces are not reachable from untrusted networks.
  • Review network logs for unusual administrative access attempts.
  • Track remediation status for every identified device.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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CVE-2020-26919 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.8 (3.1)
Known Exploited
Yes
Published

Vector: CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CISA KEV status

Status
Known exploited
Source
CISA / ADP
Date added
Not provided

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
9.8CVSS 3.1CriticalCVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N3.95.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

9.8Critical
CVSS 3.1 vector shape for CVE-2020-26919Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.