01 Record
CVE-2021-21892
A stack-based buffer overflow vulnerability exists in the Web Manager FsUnmount functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). A specially crafted HTTP request can lead to remote
CriticalPUBLISHEDCNA: talos
CNA base score9.9 CVSS v3.xCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
02 Description
A stack-based buffer overflow vulnerability exists in the Web Manager FsUnmount functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). A specially crafted HTTP request can lead to remote
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
- 30.43% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 98.0% of scored records. A rank, not a probability.
- NVD base score
- 9.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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
- 2021-12-22 18:06Z4 YR AGO
- Last updated
- 2024-08-03 18:30Z2 YR AGO
- Reserved
- 2021-01-04
- Assigning CNA
- talos
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.9)
- CNA CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- Data version
- 5.1
- Document digest
- e5a0965a625eea55d835504f479034466a8cbf5d9adbc2cce2ee3869e579ed2d
05 Affected products
VendorProductVersionsPlatforms
06 References
- talosintelligence.comhttps://talosintelligence.com/vulnerability_reports/TALOS-2021-1335