CVE-2021-21876
9.1
CRITICAL · CVSS 3.1 · EPSS 2.7% (pctl 86)
In your normal cycle
Critical by CVSS (9.1), but no sign of active exploitation.
Description
Specially-crafted HTTP requests can lead to arbitrary command execution in PUT requests. An attacker can make authenticated HTTP requests to trigger this vulnerability.
Scoring
| CVSS | 9.1 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 2.69% — more likely to be exploited than 86% of all CVEs |
| Weakness | CWE-78 |
| 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