CVE-2021-21890

Public Exploit

Description

A stack-based buffer overflow vulnerability exists in the Web Manager FsBrowseClean functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). A specially crafted HTTP request can lead to remote code execution in the vulnerable portion of the branch (deletedir). An attacker can make an authenticated HTTP request to trigger this vulnerability.

Categories

9.1
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.95% Top 15%
Third-Party Advisory talosintelligence.com
Affected: n/a Lantronix
Published at:
Updated at:

References

Link Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1334 exploit third party advisory technical description

Frequently Asked Questions

What is the severity of CVE-2021-21890?
CVE-2021-21890 has been scored as a critical severity vulnerability.
How to fix CVE-2021-21890?
To fix CVE-2021-21890, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21890 being actively exploited in the wild?
It is possible that CVE-2021-21890 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21890?
CVE-2021-21890 affects n/a Lantronix.
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