What is the CVSS score of CVE-2022-21809?

CVE-2022-21809 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H. EPSS exploitation probability: 1.7%.

Is there a public PoC exploit available for CVE-2022-21809?

Yes, a public proof-of-concept exploit is available for CVE-2022-21809. Prioritise patching immediately. EPSS: 1.7%.

Inrouter302 Firmware CVE-2022-21809

HIGH

Insecure Temporary File (CWE-377)

2022-05-12 talos-cna@cisco.com

File Upload Inrouter302 Firmware

8.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.1 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

May 12, 2022 - 17:15 nvd

HIGH 8.1

DescriptionNVD

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.

AnalysisAI

A file write vulnerability exists in the httpd upload.cgi functionality of InHand Networks InRouter302 V3.5.4. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-377. 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. Affected products include: Inhandnetworks Inrouter302 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.