What is CVE-2021-21883?

CVE-2021-21883 is a critical-severity vulnerability in Lantronix Premierwave 2050, classified under OS Command Injection. CVSS score: 9.9/10. Published 2021-12-22.

How severe is CVE-2021-21883?

Critical severity. CVSS v3 base score is 9.9 out of 10.

RCE in Lantronix Premierwave 2050

CVE-2021-21883

An OS command injection vulnerability exists in the Web Manager Diagnostics: Ping functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted HTTP request can lead to arbitrary command execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.061 (92.6th percentile) — read the EPSS interpretation.

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.

Affected products

Lantronix Premierwave_2050
Lantronix Premierwave_2050_firmware — versions 8.9.0.0
N/a Lantronix — versions Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU)

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

talos-cna@cisco.com (Technical Description, Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-21883?: CVE-2021-21883 is a critical-severity vulnerability in Lantronix Premierwave 2050, classified under OS Command Injection. CVSS score: 9.9/10. Published 2021-12-22.
How severe is CVE-2021-21883?: Critical severity. CVSS v3 base score is 9.9 out of 10.