How severe is CVE-2022-40946?

CVE-2022-40946 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-40946 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-40946?

CVE-2022-40946 affects Dlink Dir-819 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-40946?

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-2022-40946 published?

CVE-2022-40946 was published on 2023-04-16 and last updated on 2026-06-17.

CVE-2022-40946

CVE-2022-40946 is a high-severity vulnerability in Dlink Dir-819 Firmware with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Dlink Dir-819 Firmware
Published: 2023-04-16
Last modified: 2026-06-17

Description

On D-Link DIR-819 Firmware Version 1.06 Hardware Version A1 devices, it is possible to trigger a Denial of Service via the sys_token parameter in a cgi-bin/webproc?getpage=html/index.html request.

Frequently asked questions

What is CVE-2022-40946?: On D-Link DIR-819 Firmware Version 1.06 Hardware Version A1 devices, it is possible to trigger a Denial of Service via the sys_token parameter in a cgi-bin/webproc?getpage=html/index.html request.
How severe is CVE-2022-40946?: CVE-2022-40946 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-40946 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-40946?: CVE-2022-40946 affects Dlink Dir-819 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-40946?: 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-2022-40946 published?: CVE-2022-40946 was published on 2023-04-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dir-819_firmware:1.06:*:*:*:*:*:*:*

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