01 Record
CVE-2021-34343
Buffer Overflow Vulnerability in QTS, QuTS hero, and QuTScloud
MediumPUBLISHEDCNA: qnap
CNA base score6.0 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H
02 Description
Buffer Overflow Vulnerability in QTS, QuTS hero, and QuTScloud
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.95% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 80.0% of scored records. A rank, not a probability.
- NVD base score
- 7.2 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-09-10 04:00Z5 YR AGO
- Last updated
- 2024-09-16 20:22Z2 YR AGO
- Reserved
- 2021-06-08
- Assigning CNA
- qnap
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.0)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H
- Weaknesses
- CWE-787Out-of-bounds WriteBase
- Data version
- 5.1
- Document digest
- 7e2454dadd7e402199432befedee08ec8698738fbb99b59a003da8d93b375482
05 Affected products
06 References
07 Remediation
We have already fixed this vulnerability in the following versions of QTS, QuTScloud, QuTS hero: QTS 4.5.4.1715 build 20210630 and later QTS 5.0.0.1716 build 20210701 and later QuTScloud c4.5.6.1755 and later QuTS hero h4.5.4.1771 build 20210825 and later