CVE-2021-28799
Scores
EPSS
Percentile: 91.1%
CVSS
CVSS Score: 9.8/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/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
Network (N)
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:N/AC:L/Au:N/C:P/I:P/A:P
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
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
Partial
Measures the impact to the confidentiality of information
Integrity Impact
Partial
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Partial
Measures the impact to the availability of the impacted component
Description
An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync. ) If exploited, the vulnerability allows remote attackers to log in to a device. This issue affects: QNAP Systems Inc. HBS 3 versions prior to v16.0.0415 on QTS 4.5.2; versions prior to v3.0.210412 on QTS 4.3.6; versions prior to v3.0.210411 on QTS 4.3.4; versions prior to v3.0.210411 on QTS 4.3.3; versions prior to v16.0.0419 on QuTS hero h4.5.1; versions prior to v16.0.0419 on QuTScloud c4.5.1~c4.5.4. This issue does not affect: QNAP Systems Inc. HBS 2 . QNAP Systems Inc. HBS 1.3 .
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Sources
CWEs
Related Vulnerabilities
Exploits
Exploit ID: CVE-2021-28799
Source: cisa
URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Vulnerable Software (5)
Type: Configuration
Vendor: *
Product: hybrid_backup_sync
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "versionEndExcluding": "16.0.0415", "vulnerable": ...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "versionEndExcluding": "16.0.0415", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:qnap:qts:4.5.2:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: hybrid_backup_sync
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.0.210412", "vulnerable":...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.0.210412", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:qnap:qts:4.3.6:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: hybrid_backup_sync
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.0.210411", "vulnerable":...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.0.210411", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:qnap:qts:4.3.3:*:*:*:*:*:*:*" }, { "cpe23uri": "cpe:2.3:o:qnap:qts:4.3.4:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: hybrid_backup_sync
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "versionEndExcluding": "16.0.0419", "vulnerable": ...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "versionEndExcluding": "16.0.0419", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:qnap:quts_hero:h4.5.1:*:*:*:*:*:*:*" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd
Type: Configuration
Vendor: *
Product: hybrid_backup_sync
Operating System: * * *
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "versionEndExcluding": "16.0.0419", "vulnerable": ...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "versionEndExcluding": "16.0.0419", "vulnerable": true } ], "operator": "OR" }, { "cpe_match": [ { "cpe23uri": "cpe:2.3:o:qnap:qutscloud:*:*:*:*:*:*:*:*", "versionEndIncluding": "c4.5.4", "versionStartIncluding": "c4.5.1" } ], "operator": "OR" } ], "operator": "AND"}
Source: nvd