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ZyXEL NAS products running firmware version 5.21 and earlier are vulnerable to pre-authentication command injection in weblogin.cgi

cve-program · CVE-2020-9054

Published

NAS326

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NAS326",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "lessThanOrEqual": "V5.21(AAZF.7)C0",
                            "status": "affected",
                            "version": "V5.21(AAZF.7)C0",
                            "versionType": "custom"
                        }
                    ]
                }

NAS520

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NAS520",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "lessThanOrEqual": "V5.21(AASZ.3)C0",
                            "status": "affected",
                            "version": "V5.21(AASZ.3)C0",
                            "versionType": "custom"
                        }
                    ]
                }

NAS540

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NAS540",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "lessThanOrEqual": "V5.21(AATB.4)C0",
                            "status": "affected",
                            "version": "V5.21(AATB.4)C0",
                            "versionType": "custom"
                        }
                    ]
                }

NAS542

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NAS542",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "lessThanOrEqual": "V5.21(ABAG.4)C0",
                            "status": "affected",
                            "version": "V5.21(ABAG.4)C0",
                            "versionType": "custom"
                        }
                    ]
                }

NSA210

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NSA210",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "all"
                        }
                    ]
                }

NSA220

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NSA220",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "all"
                        }
                    ]
                }

NSA220+

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NSA220+",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "all"
                        }
                    ]
                }

NSA221

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NSA221",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "all"
                        }
                    ]
                }

NSA310

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NSA310",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "lessThanOrEqual": "V4.75(AALH.2)C0",
                            "status": "affected",
                            "version": "V4.75(AALH.2)C0",
                            "versionType": "custom"
                        }
                    ]
                }

NSA320

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NSA320",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "all"
                        }
                    ]
                }

NSA320S

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NSA320S",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "lessThanOrEqual": "V4.75(AANV.2)C0",
                            "status": "affected",
                            "version": "V4.75(AANV.2)C0",
                            "versionType": "custom"
                        }
                    ]
                }

NSA325

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NSA325",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "lessThanOrEqual": "V4.81(AAAJ.1)C0",
                            "status": "affected",
                            "version": "V4.81(AAAJ.1)C0",
                            "versionType": "custom"
                        }
                    ]
                }

NSA325v2

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "NSA325v2",
                    "vendor": "ZyXEL",
                    "versions": [
                        {
                            "lessThanOrEqual": "V4.81(AALS.1)C0",
                            "status": "affected",
                            "version": "V4.81(AALS.1)C0",
                            "versionType": "custom"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 11 Nov 12:06 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current