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ID

VAR-202109-1950


CVE

CVE-2021-34870


TITLE

NETGEAR XR1000  Vulnerability in lack of authentication for critical features in routers

Trust: 0.8

sources: JVNDB: JVNDB-2021-018098

DESCRIPTION

This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of NETGEAR XR1000 1.0.0.52_1.0.38 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of SOAP messages. The issue results from a lack of authentication required for a privileged request. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-13325. Zero Day Initiative To this vulnerability ZDI-CAN-13325 Was numbering.Information may be obtained

Trust: 2.34

sources: NVD: CVE-2021-34870 // JVNDB: JVNDB-2021-018098 // ZDI: ZDI-21-1058 // VULMON: CVE-2021-34870

AFFECTED PRODUCTS

vendor:netgearmodel:xr1000scope:eqversion:1.0.0.52_1.0.38

Trust: 1.0

vendor:ネットギアmodel:xr1000scope:eqversion: -

Trust: 0.8

vendor:ネットギアmodel:xr1000scope:eqversion:xr1000 firmware 1.0.0.52_1.0.38

Trust: 0.8

vendor:netgearmodel:xr1000scope: - version: -

Trust: 0.7

sources: ZDI: ZDI-21-1058 // JVNDB: JVNDB-2021-018098 // NVD: CVE-2021-34870

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-34870
value: MEDIUM

Trust: 1.0

zdi-disclosures@trendmicro.com: CVE-2021-34870
value: MEDIUM

Trust: 1.0

NVD: CVE-2021-34870
value: MEDIUM

Trust: 0.8

ZDI: CVE-2021-34870
value: MEDIUM

Trust: 0.7

CNNVD: CNNVD-202109-434
value: MEDIUM

Trust: 0.6

nvd@nist.gov: CVE-2021-34870
severity: LOW
baseScore: 3.3
vectorString: AV:A/AC:L/AU:N/C:P/I:N/A:N
accessVector: ADJACENT_NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: NONE
availabilityImpact: NONE
exploitabilityScore: 6.5
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.8

zdi-disclosures@trendmicro.com: CVE-2021-34870
baseSeverity: MEDIUM
baseScore: 6.5
vectorString: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
attackVector: ADJACENT
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: NONE
availabilityImpact: NONE
exploitabilityScore: 2.8
impactScore: 3.6
version: 3.0

Trust: 1.8

nvd@nist.gov: CVE-2021-34870
baseSeverity: MEDIUM
baseScore: 6.5
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
attackVector: ADJACENT
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: NONE
availabilityImpact: NONE
exploitabilityScore: 2.8
impactScore: 3.6
version: 3.1

Trust: 1.0

ZDI: CVE-2021-34870
baseSeverity: MEDIUM
baseScore: 6.5
vectorString: AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
attackVector: ADJACENT
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: NONE
availabilityImpact: NONE
exploitabilityScore: 2.8
impactScore: 3.6
version: 3.0

Trust: 0.7

sources: ZDI: ZDI-21-1058 // CNNVD: CNNVD-202109-434 // JVNDB: JVNDB-2021-018098 // NVD: CVE-2021-34870 // NVD: CVE-2021-34870

PROBLEMTYPE DATA

problemtype:CWE-306

Trust: 1.0

problemtype:Lack of authentication for critical features (CWE-306) [ others ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-018098 // NVD: CVE-2021-34870

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202109-434

TYPE

access control error

Trust: 0.6

sources: CNNVD: CNNVD-202109-434

PATCH

title:Security Advisory for a Security Misconfiguration Vulnerability on the XR1000, PSV-2021-0101url:https://kb.netgear.com/000063967/Security-Advisory-for-a-Security-Misconfiguration-Vulnerability-on-the-XR1000-PSV-2021-0101

Trust: 1.5

title:Netgear NETGEAR Remediation measures for authorization problem vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=164652

Trust: 0.6

sources: ZDI: ZDI-21-1058 // CNNVD: CNNVD-202109-434 // JVNDB: JVNDB-2021-018098

EXTERNAL IDS

db:NVDid:CVE-2021-34870

Trust: 4.0

db:ZDIid:ZDI-21-1058

Trust: 3.2

db:JVNDBid:JVNDB-2021-018098

Trust: 0.8

db:ZDI_CANid:ZDI-CAN-13325

Trust: 0.7

db:CS-HELPid:SB2021100102

Trust: 0.6

db:CNNVDid:CNNVD-202109-434

Trust: 0.6

db:VULMONid:CVE-2021-34870

Trust: 0.1

sources: ZDI: ZDI-21-1058 // VULMON: CVE-2021-34870 // CNNVD: CNNVD-202109-434 // JVNDB: JVNDB-2021-018098 // NVD: CVE-2021-34870

REFERENCES

url:https://www.zerodayinitiative.com/advisories/zdi-21-1058/

Trust: 3.1

url:https://kb.netgear.com/000063967/security-advisory-for-a-security-misconfiguration-vulnerability-on-the-xr1000-psv-2021-0101

Trust: 2.3

url:https://nvd.nist.gov/vuln/detail/cve-2021-34870

Trust: 1.4

url:https://www.cybersecurity-help.cz/vdb/sb2021100102

Trust: 0.6

sources: ZDI: ZDI-21-1058 // VULMON: CVE-2021-34870 // CNNVD: CNNVD-202109-434 // JVNDB: JVNDB-2021-018098 // NVD: CVE-2021-34870

CREDITS

Anonymous

Trust: 1.3

sources: ZDI: ZDI-21-1058 // CNNVD: CNNVD-202109-434

SOURCES

db:ZDIid:ZDI-21-1058
db:VULMONid:CVE-2021-34870
db:CNNVDid:CNNVD-202109-434
db:JVNDBid:JVNDB-2021-018098
db:NVDid:CVE-2021-34870

LAST UPDATE DATE

2026-06-19T23:38:12.003000+00:00


SOURCES UPDATE DATE

db:ZDIid:ZDI-21-1058date:2021-09-08T00:00:00
db:CNNVDid:CNNVD-202109-434date:2022-02-14T00:00:00
db:JVNDBid:JVNDB-2021-018098date:2023-03-23T06:39:00
db:NVDid:CVE-2021-34870date:2026-06-17T03:56:42.953

SOURCES RELEASE DATE

db:ZDIid:ZDI-21-1058date:2021-09-08T00:00:00
db:CNNVDid:CNNVD-202109-434date:2021-09-08T00:00:00
db:JVNDBid:JVNDB-2021-018098date:2023-03-23T00:00:00
db:NVDid:CVE-2021-34870date:2022-01-25T16:15:08.680