How severe is CVE-2022-21809?

CVE-2022-21809 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2022-21809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-21809?

CVE-2022-21809 affects Inhandnetworks Inrouter302 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-21809?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-21809 published?

CVE-2022-21809 was published on 2022-05-12 and last updated on 2026-06-17.

CVE-2022-21809

CVE-2022-21809 is a high-severity vulnerability in Inhandnetworks Inrouter302 Firmware with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Inhandnetworks Inrouter302 Firmware
Published: 2022-05-12
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-21809?: 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.
How severe is CVE-2022-21809?: CVE-2022-21809 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2022-21809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-21809?: CVE-2022-21809 affects Inhandnetworks Inrouter302 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-21809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-21809 published?: CVE-2022-21809 was published on 2022-05-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:inhandnetworks:inrouter302_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Inhandnetworks Inrouter302 Firmware

CVE-2023-22601 — Critical (CVSS 10.0): InHand Networks InRouter 302, prior to version IR302 V3.5.56, and InRouter 615, prior to version…
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