CVE-2022-21809

Name: CVE-2022-21809
Creator: NVD / NIST
Published: 2022-05-12T17:15:10.127+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.70%

Last modified Jun 17, 2026

CVE-2022-21809 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. A file write vulnerability exists in the httpd upload.cgi functionality of InHand Networks InRouter302 V3.5.4. A specially-crafted HTTP request can lead to arbitrary file upload. EPSS estimates a 1.70% chance of exploitation in the next 30 days.

Description

A file write vulnerability exists in the httpd upload.cgi functionality of InHand Networks InRouter302 V3.5.4. A specially-crafted HTTP request can lead to arbitrary file upload. An attacker can upload a malicious file to trigger this vulnerability.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS Probability

1.70%

74.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Inhandnetworks	Inrouter302 Firmware	<= 3.5.37

References

https://talosintelligence.com/vulnerability_reports/TALOS-2022-1468Exploit, Technical Description, Third Party Advisory
https://www.inhandnetworks.com/upload/attachment/202205/10/InHand-PSA-2022-01.pdfVendor Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2022-1468Exploit, Technical Description, Third Party Advisory
https://www.inhandnetworks.com/upload/attachment/202205/10/InHand-PSA-2022-01.pdfVendor Advisory

Timeline

Published: May 12, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-21809?

How severe is CVE-2022-21809?

CVE-2022-21809 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.70% probability of exploitation in the next 30 days.

How do I fix CVE-2022-21809?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-21809?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST