by Kastro
Paper/Archive/CVE-2021-28799

CVE-2021-28799

QNAP Systems Inc. HBS 3 — Improper Authorization Vulnerability in HBS 3 (Hybrid Backup Sync)

KEV · due 21 Aprransomware useEPSS 78%public exploitSSVC actCVSS 10.0
critical.is priorityof 100
100
CVSS 10.0 (CNA)10.0 / 10 × 3030.0In CISA KEV+3030.0EPSS percentile 99.6.996 × 2019.9Exploit: SSVC active+1010.0SSVC exploitation: active+1010.0
Description · from the CVE record

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 .

Affected

ProductAffectedFixed inSource
HBS 3unspecified – < v16.0.0415v16.0.0415CNA
HBS 3unspecified – < v3.0.210412v3.0.210412CNA
HBS 3unspecified – < v3.0.210411v3.0.210411CNA
HBS 3unspecified – < v3.0.210411v3.0.210411CNA
HBS 3unspecified – < v16.0.0419v16.0.0419CNA
HBS 3unspecified – < v16.0.0419v16.0.0419CNA
HBS 2see advisoryall versionsCNA
HBS 1.3see advisoryall versionsCNA

Scores by source

qnap (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

refqnap.com/en/security-advisory/QSA-21-13refcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28799kevcisa.gov/known-exploited-vulnerabilities-catalog