CVE-2020-27867

highpriority · track · 28EPSS 0.022 · 83 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.23% (83rd) EPSS

CVSS 7.7 · high

Is it mine?

20 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 R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. When parsing the funjsq_access_token parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11653.

cvss

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

7.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.7

v2.07.7highAV:A/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 5.1 · impact 10

v3.16.8mediumCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 0.9 · impact 5.9

v3.06.8mediumCVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.06.8mediumCVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · zdi-disclosures@trendmicro.comexploitability 0.9 · impact 5.9

v3.16.8mediumCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-77USprimary

affected products (20)

Products and version ranges known to be affected.

Netgear Multiple Routers≤ firmware version 1.2.0.62_1.0.1enisa_euvdEU
netgear ac2100 firmware< 1.2.0.76nvdUScpe:2.3:o:netgear:ac2100_firmware:*:*:*:*:*:*:*:*
netgear ac2400 firmware< 1.2.0.76nvdUScpe:2.3:o:netgear:ac2400_firmware:*:*:*:*:*:*:*:*
netgear ac2600 firmware< 1.2.0.76nvdUScpe:2.3:o:netgear:ac2600_firmware:*:*:*:*:*:*:*:*
netgear r6020 firmware< 1.0.0.48nvdUScpe:2.3:o:netgear:r6020_firmware:*:*:*:*:*:*:*:*
netgear r6080 firmware< 1.0.0.48nvdUScpe:2.3:o:netgear:r6080_firmware:*:*:*:*:*:*:*:*
netgear r6120 firmware< 1.0.0.76nvdUScpe:2.3:o:netgear:r6120_firmware:*:*:*:*:*:*:*:*
netgear r6220 firmware< 1.1.0.104nvdUScpe:2.3:o:netgear:r6220_firmware:*:*:*:*:*:*:*:*
netgear r6230 firmware< 1.1.0.104nvdUScpe:2.3:o:netgear:r6230_firmware:*:*:*:*:*:*:*:*
netgear r6260 firmware< 1.1.0.78nvdUScpe:2.3:o:netgear:r6260_firmware:*:*:*:*:*:*:*:*
netgear r6330 firmware< 1.1.0.78nvdUScpe:2.3:o:netgear:r6330_firmware:*:*:*:*:*:*:*:*
netgear r6350 firmware< 1.1.0.78nvdUScpe:2.3:o:netgear:r6350_firmware:*:*:*:*:*:*:*:*
netgear r6700 firmware< 1.2.0.76nvdUScpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:*
netgear r6800 firmware< 1.2.0.76nvdUScpe:2.3:o:netgear:r6800_firmware:*:*:*:*:*:*:*:*
netgear r6850 firmware< 1.1.0.78nvdUScpe:2.3:o:netgear:r6850_firmware:*:*:*:*:*:*:*:*
netgear r6900 firmware< 1.2.0.76nvdUScpe:2.3:o:netgear:r6900_firmware:*:*:*:*:*:*:*:*
netgear r7200 firmware< 1.2.0.76nvdUScpe:2.3:o:netgear:r7200_firmware:*:*:*:*:*:*:*:*
netgear r7350 firmware< 1.2.0.76nvdUScpe:2.3:o:netgear:r7350_firmware:*:*:*:*:*:*:*:*
netgear r7400 firmware< 1.2.0.76nvdUScpe:2.3:o:netgear:r7400_firmware:*:*:*:*:*:*:*:*
netgear r7450 firmware< 1.2.0.76nvdUScpe:2.3:o:netgear:r7450_firmware:*:*:*:*:*:*:*:*

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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+4594 more

references (7)

External citations — patches, advisories, analysis.

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