What is CVE-2021-21881?

CVE-2021-21881 is a critical-severity vulnerability in Lantronix, classified under OS Command Injection. CVSS score: 9.9/10. Published 2021-12-22.

How severe is CVE-2021-21881?

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

Is CVE-2021-21881 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Lantronix

CVE-2021-21881

An OS command injection vulnerability exists in the Web Manager Wireless Network Scanner functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted HTTP request can lead to command execution. An attacker can make an authent…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.923 (99.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

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

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

References

talosintelligence.com/vulnerability_reports/TALOS-2021-1325 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-21881?: CVE-2021-21881 is a critical-severity vulnerability in Lantronix, classified under OS Command Injection. CVSS score: 9.9/10. Published 2021-12-22.
How severe is CVE-2021-21881?: Critical severity. CVSS v3 base score is 9.9 out of 10.
Is CVE-2021-21881 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.