Threats / NETGEAR / CVE-2020-26919
CVE-2020-26919
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
NETGEAR JGS516PE Devices vulnerability
NETGEAR JGS516PE devices lack proper function-level access controls, allowing unauthorized access to administrative functions.
Verdict
Today item — known-exploited.
Missing access control on the JGS516PE enables unauthenticated or low-privileged attackers to invoke protected administrative operations, potentially leading to device compromise, configuration tampering, or network disruption.
CISA KEV Yes · 2021-11-035EPSS 0.57544 (verify live)6CVSS 9.83CISA SSVC Exploitation: active · Automatable: yes · Impact: total4Exploit Public PoC / detection · nuclei template12
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
6 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03).
Probability (EPSS)
EPSS 0.57544 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 9.8 (CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N) · Affected: NETGEAR, JGS516PE Devices. Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 3.1, set at disclosure.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: yes · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 390 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a public proof-of-concept / detection template). Catalog entries: nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I identify the JGS516PE device on the network and probe for unprotected administrative endpoints.
Business
Network infrastructure becomes discoverable to threat actors conducting reconnaissance.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I invoke administrative functions without proper authentication or with insufficient privilege checks.
Business
Unauthorized modifications to device configuration expose the network to further compromise.
3
Lateral reach — past segmentation narrative 3
Attacker
I alter device settings, disable security features, or redirect traffic through the compromised switch.
Business
Network availability and data integrity are compromised; lateral movement into protected segments becomes possible.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05