HOMEVULNERABILITIESCVE-2022-21809
HIGH

CVE-2022-21809

CWE-377Published: May 12, 2022· Updated: Jun 17, 2026

8.1
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2022-21809 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected Vendors & Products

inhandnetworks2 product(s)
inrouter302 firmwareinrouter302
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://talosintelligence.com/vulnerability_reports/TALOS-2022-1468
ADVISORYhttps://www.inhandnetworks.com/upload/attachment/202205/10/InHand-PSA-2022-01.pdf
ADVISORYhttps://talosintelligence.com/vulnerability_reports/TALOS-2022-1468
ADVISORYhttps://www.inhandnetworks.com/upload/attachment/202205/10/InHand-PSA-2022-01.pdf

All References (4)

→
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

Quick Facts

CVE IDCVE-2022-21809
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-377
CISA KEVNo
Affected1 vendor(s)
PublishedMay 12, 2022

Related CVEs (CWE-377)

CVE-2012-2666
9.8
CVE-2018-25068
9.8
CVE-2011-4119
9.8
CVE-2013-4561
9.1
CVE-2018-16494
8.8
CVE-2022-4817
7.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-21809 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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