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CVE-2021-28809
| Reporter | Title | Published | Views | Family All 9 |
|---|---|---|---|---|
 | The vulnerability of the HBS 3 (Hybrid Backup Sync) application for backup and disaster recovery operations on QNAP’s operating systems, related to authentication procedures that allow unauthorized users to escalate their privileges. | 2 Aug 202100:00 | – | bdu_fstec |
 | CVE-2021-28809 | 6 Jul 202115:47 | – | circl |
 | QNAP HBS 3 访问控制错误漏洞 | 5 Jul 202100:00 | – | cnnvd |
 | CVE-2021-28809 Missing Authentication for Critical Function in RTRR Server in HBS3 | 8 Jul 202107:40 | – | cvelist |
 | EUVD-2021-15465 | 7 Oct 202500:30 | – | euvd |
 | CVE-2021-28809 | 8 Jul 202108:15 | – | nvd |
 | CVE-2021-28809 | 8 Jul 202108:15 | – | osv |
 | Improper access control | 8 Jul 202108:15 | – | prion |
 | QNAP NAS Hybrid Backup Missing Authentication for Critical Function Remote Code Execution Vulnerability | 8 Jul 202100:00 | – | zdi |
Node
Node
Node
[
{
"platforms": [
"QTS 4.3.6"
],
"product": "HBS 3",
"vendor": "QNAP Systems Inc.",
"versions": [
{
"lessThan": "v3.0.210507",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"platforms": [
"QTS 4.3.4"
],
"product": "HBS 3",
"vendor": "QNAP Systems Inc.",
"versions": [
{
"lessThan": "v3.0.210506",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"platforms": [
"QTS 4.3.3"
],
"product": "HBS 3",
"vendor": "QNAP Systems Inc.",
"versions": [
{
"lessThan": "v3.0.210506",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]| Source | Link |
|---|---|
| qnap | www.qnap.com/en/security-advisory/qsa-21-19 |
| zerodayinitiative | www.zerodayinitiative.com/advisories/ZDI-21-783/ |
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17 Jun 2026 03:46Current
9.5High risk
Vulners AI Score9.5
CVSS 3.19.8
CVSS 210
EPSS0.15802