Buffer overflow in Lantronix Premierwave 2050

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 code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.304 (98.2th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-21892: held from 0.304 to 0.304.

EPSS over last 30 days · oldest: 0.304 · newest: 0.304 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-21892?
CVE-2021-21892 is a critical-severity vulnerability in Lantronix Premierwave 2050, classified under Stack-based Buffer Overflow. CVSS score: 9.9/10. Published 2021-12-22.
How severe is CVE-2021-21892?
Critical severity. CVSS v3 base score is 9.9 out of 10.