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Vulnerability record · CVE-2018-21127 · published 22 April 2020

CVE-2018-21127: Netgear wac505 firmware os command injection vulnerability

Netgear · Wac505 Firmware

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0.17.

8.8 CVSS 3.1 High EPSS 1.4% · top 28.8% CWE-78 · OS command injection
8.8CVSS 3.1 base score, v2 5.8
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0.17.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://kb.netgear.com/000060231/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-Wireless-Access-Poin Vendor Advisory
https://kb.netgear.com/000060231/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-Wireless-Access-Poin Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-21097Netgear wac505 firmware out-of-bounds write vulnerabilityCertain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects WAC505 before 5.0.5.4, WAC510 befo…EPSS 1.2%9.8CVE-2018-21132Netgear wac505 firmware missing authentication for critical function vulnerabilityCertain NETGEAR devices are affected by authentication bypass. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0.17.EPSS 1.7%9.8CVE-2018-21133Netgear wac505 firmware out-of-bounds write vulnerabilityCertain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects WAC505 before 5.0.0.17 and WAC510 …EPSS 1.4%9.1CVE-2018-21131Netgear wac505 firmware vulnerabilityCertain NETGEAR devices are affected by unauthenticated firmware downgrade. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0.17.EPSS 1.3%8.8CVE-2018-21128Netgear wac505 firmware improper authentication vulnerabilityCertain NETGEAR devices are affected by authentication bypass. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0.17.EPSS 0.76%8.8CVE-2018-21130Netgear wac505 firmware os command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0…EPSS 1.6%8.8CVE-2018-21124Netgear wac505 firmware improper privilege management vulnerabilityNETGEAR WAC510 devices before 5.0.0.17 are affected by privilege escalation.EPSS 0.60%8.8CVE-2018-21126Netgear wac505 firmware os command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0…EPSS 1.5%

Source: NIST National Vulnerability Database (record CVE-2018-21127), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.