How severe is CVE-2022-46423?

CVE-2022-46423 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-46423 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-46423?

CVE-2022-46423 affects Netgear Wnr2000 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-46423?

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-2022-46423 published?

CVE-2022-46423 was published on 2022-12-20 and last updated on 2026-06-17.

CVE-2022-46423

CVE-2022-46423 is a high-severity vulnerability in Netgear Wnr2000 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-494.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-494
Affected product: Netgear Wnr2000 Firmware
Published: 2022-12-20
Last modified: 2026-06-17

Description

An exploitable firmware modification vulnerability was discovered on the Netgear WNR2000v1 router. An attacker can conduct a MITM (Man-in-the-Middle) attack to modify the user-uploaded firmware image and bypass the CRC check, allowing attackers to execute arbitrary code or cause a Denial of Service (DoS). This affects v1.2.3.7 and earlier.

Frequently asked questions

What is CVE-2022-46423?: An exploitable firmware modification vulnerability was discovered on the Netgear WNR2000v1 router. An attacker can conduct a MITM (Man-in-the-Middle) attack to modify the user-uploaded firmware image and bypass the CRC check, allowing attackers to execute arbitrary code or cause a Denial of Service (DoS). This affects v1.2.3.7 and earlier.
How severe is CVE-2022-46423?: CVE-2022-46423 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-46423 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-46423?: CVE-2022-46423 affects Netgear Wnr2000 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-46423?: 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-2022-46423 published?: CVE-2022-46423 was published on 2022-12-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:netgear:wnr2000_firmware:*:*:*:*:*:*:*:*

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