CVE-2020-27866
Scores
EPSS
Percentile: 90.8%
CVSS
CVSS Score: 8.8/10
All CVSS Scores
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Adjacent Network (A)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
High (H)
Measures the impact to the confidentiality of information
Integrity Impact
High (H)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
Vector: AV:A/AC:L/Au:N/C:C/I:C/A:C
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Adjacent Network (A)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Authentication
None (N)
Describes the level of privileges an attacker must possess
Confidentiality Impact
Complete
Measures the impact to the confidentiality of information
Integrity Impact
Complete
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Complete
Measures the impact to the availability of the impacted component
Description
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11355.
Scaner-VS 7 — a modern vulnerability management solution
Sources
CWEs
Vulnerable Software (19)
Type: Configuration
Vendor: *
Product: ac2100_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:ac2100_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": t...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:ac2100_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:ac2100:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: ac2400_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:ac2400_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": t...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:ac2400_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:ac2400:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: ac2600_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:ac2600_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": t...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:ac2600_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:ac2600:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6020_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6020_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.0.0.48", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6020_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.0.0.48", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6020:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6080_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6080_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.0.0.48", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6080_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.0.0.48", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6080:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6120_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6120_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.0.0.76", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6120_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.0.0.76", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6120:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6220_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6220_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.104", "vulnerable": t...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6220_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.104", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6220:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6230_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6230_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.104", "vulnerable": t...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6230_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.104", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6230:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6260_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6260_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.78", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6260_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.78", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6260:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6330_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6330_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.78", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6330_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.78", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6330:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6350_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6350_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.78", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6350_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.78", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6350:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6700_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6700:v2:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6800_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6800_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6800_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6800:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6850_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6850_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.78", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6850_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.0.78", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6850:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r6900_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6900_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r6900_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r6900:v2:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r7200_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r7200_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r7200_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r7200:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r7350_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r7350_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r7350_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r7350:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r7400_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r7400_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r7400_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r7400:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: r7450_firmware
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r7450_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": tr...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:netgear:r7450_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.0.76", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:h:netgear:r7450:-:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd