CVE-2020-27861

highpriority · track · 36EPSS 0.020 · 81 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.03% (81st) EPSS

CVSS 8.3 · high

Is it mine?

40 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UA_Parser utility. A crafted Host Name option in a DHCP request can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11076.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.08.3highAV:A/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 6.5 · impact 10

v3.18.8highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.08.8highCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.08.8highCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · zdi-disclosures@trendmicro.comexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimary

affected products (40)

Products and version ranges known to be affected.

Netgear Orbi≤ 2.5.1.16enisa_euvdEU
netgear cbk40 firmware< 2.6.1.38nvdUScpe:2.3:o:netgear:cbk40_firmware:*:*:*:*:*:*:*:*
netgear cbk43 firmware< 2.6.1.38nvdUScpe:2.3:o:netgear:cbk43_firmware:*:*:*:*:*:*:*:*
netgear cbr40 firmware< 2.6.1.38nvdUScpe:2.3:o:netgear:cbr40_firmware:*:*:*:*:*:*:*:*
netgear ex6200 firmware< 1.0.1.82nvdUScpe:2.3:o:netgear:ex6200_firmware:*:*:*:*:*:*:*:*
netgear ex7700 firmware< 1.0.0.210nvdUScpe:2.3:o:netgear:ex7700_firmware:*:*:*:*:*:*:*:*
netgear ex8000 firmware< 1.0.1.224nvdUScpe:2.3:o:netgear:ex8000_firmware:*:*:*:*:*:*:*:*
netgear rbk12 firmware< 2.6.1.44nvdUScpe:2.3:o:netgear:rbk12_firmware:*:*:*:*:*:*:*:*
netgear rbk13 firmware< 2.6.1.44nvdUScpe:2.3:o:netgear:rbk13_firmware:*:*:*:*:*:*:*:*
netgear rbk14 firmware< 2.6.1.44nvdUScpe:2.3:o:netgear:rbk14_firmware:*:*:*:*:*:*:*:*
netgear rbk15 firmware< 2.6.1.44nvdUScpe:2.3:o:netgear:rbk15_firmware:*:*:*:*:*:*:*:*
netgear rbk20 router firmware< 2.6.1.36nvdUScpe:2.3:o:netgear:rbk20_router_firmware:*:*:*:*:*:*:*:*
netgear rbk20 satellite firmware< 2.6.1.38nvdUScpe:2.3:o:netgear:rbk20_satellite_firmware:*:*:*:*:*:*:*:*
netgear rbk20w firmware< 2.6.1.36nvdUScpe:2.3:o:netgear:rbk20w_firmware:*:*:*:*:*:*:*:*
netgear rbk22 router firmware< 2.6.1.36nvdUScpe:2.3:o:netgear:rbk22_router_firmware:*:*:*:*:*:*:*:*
netgear rbk22 satellite firmware< 2.6.1.38nvdUScpe:2.3:o:netgear:rbk22_satellite_firmware:*:*:*:*:*:*:*:*
netgear rbk23 router firmware< 2.6.1.36nvdUScpe:2.3:o:netgear:rbk23_router_firmware:*:*:*:*:*:*:*:*
netgear rbk23 satellite firmware< 2.6.1.38nvdUScpe:2.3:o:netgear:rbk23_satellite_firmware:*:*:*:*:*:*:*:*
netgear rbk23w firmware< 2.6.1.36nvdUScpe:2.3:o:netgear:rbk23w_firmware:*:*:*:*:*:*:*:*
netgear rbk30 firmware< 2.6.1.36nvdUScpe:2.3:o:netgear:rbk30_firmware:*:*:*:*:*:*:*:*

showing 20 of 40

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-02-12modified 2026-06-17

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references (7)

External citations — patches, advisories, analysis.

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