CVE-2021-21892
9.9
CRITICAL · CVSS 3.1 · EPSS 30.4% (pctl 98)
Patch early
EPSS 30.4% — above the 10% action threshold.
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 code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.
Scoring
| CVSS | 9.9 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 30.44% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-121 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-12-22 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| lantronix | premierwave 2050 |
| lantronix | premierwave 2050 firmware |
References
→ the Explorer · watch your stack · NVD