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Vulnerability record · CVE-2018-21133 · published 23 April 2020

CVE-2018-21133: Netgear wac505 firmware out-of-bounds write vulnerability

Netgear · Wac505 Firmware

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0.17.

9.8 CVSS 3.1 Critical EPSS 1.4% · top 29.4% CWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 7.5
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 a stack-based buffer overflow by an unauthenticated attacker. This affects WAC505 before 5.0.0.17 and WAC510 before 5.0.0.17.

CVSS:3.1/AV:N/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/000060227/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Wireless-Access-Points- Vendor Advisory
https://kb.netgear.com/000060227/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Wireless-Access-Points- 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%9.1CVE-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-2018-21127Netgear 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 1.4%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-2018-21133), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.