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PatchSiren cyber security CVE debrief

CVE-2020-26919 NETGEAR CVE debrief

CVE-2020-26919 affects NETGEAR JGS516PE devices and is described as a missing function level access control vulnerability. In defensive terms, that means some device functions may not be restricted to the intended privilege level. CISA lists the issue in its Known Exploited Vulnerabilities catalog, which makes it a higher-priority remediation item than a routine advisory. The supplied timeline shows 2021-11-03 as the relevant public/KEV date, with a KEV due date of 2022-05-03.

Vendor
NETGEAR
Product
JGS516PE Devices
CVSS
CRITICAL 9.8
CISA KEV
Listed
Original CVE published
2021-11-03
Original CVE updated
2021-11-03
Advisory published
2021-11-03
Advisory updated
2021-11-03

Who should care

Administrators of NETGEAR JGS516PE devices, network operations teams, security teams responsible for device firmware management, and any organization exposing device management interfaces to trusted or untrusted networks.

Technical summary

The vulnerability is a function-level access control weakness in NETGEAR JGS516PE devices. The core risk is that restricted functionality may be reachable without the intended authorization checks. The supplied source corpus does not provide a CVSS score or affected firmware range, but CISA’s KEV listing indicates the issue has been observed in active exploitation context and should be remediated using vendor guidance.

Defensive priority

Urgent

Recommended defensive actions

  • Inventory where NETGEAR JGS516PE devices are deployed.
  • Apply updates per vendor instructions as referenced by CISA KEV.
  • Restrict access to device management interfaces to trusted administrative networks only.
  • Review device logs and management activity for unexpected or unauthorized function use.
  • Confirm the remediation state after updating and keep the devices under routine patch management.

Evidence notes

This debrief is based only on the supplied CVE/KEV metadata and official record links. The vulnerability name in the CVE and KEV entries identifies a missing function level access control issue for NETGEAR JGS516PE devices. The CISA KEV entry marks it as a known exploited vulnerability and specifies the required action: apply updates per vendor instructions. The supplied timeline places the public/KEV date at 2021-11-03 and the KEV due date at 2022-05-03. No CVSS score or remediation version was provided in the supplied corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2020-26919 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2020-26919

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2020-26919 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2020-26919

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.