What is CVE-2021-21887?

CVE-2021-21887 is a critical-severity vulnerability in Lantronix Premierwave 2050, classified under Stack-based Buffer Overflow. CVSS score: 9.1/10. Published 2021-12-22.

How severe is CVE-2021-21887?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Buffer overflow in Lantronix Premierwave 2050

CVE-2021-21887

A stack-based buffer overflow vulnerability exists in the Web Manager SslGenerateCSR 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

EPSS: 0.030 (85.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/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)

References

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

Frequently asked questions

What is CVE-2021-21887?: CVE-2021-21887 is a critical-severity vulnerability in Lantronix Premierwave 2050, classified under Stack-based Buffer Overflow. CVSS score: 9.1/10. Published 2021-12-22.
How severe is CVE-2021-21887?: Critical severity. CVSS v3 base score is 9.1 out of 10.