How severe is CVE-2022-43443?

CVE-2022-43443 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-43443 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-43443?

CVE-2022-43443 primarily affects Buffalo Wsr-3200ax4s Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-43443?

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-2022-43443 published?

CVE-2022-43443 was published on 2022-12-19 and last updated on 2026-06-17.

CVE-2022-43443

CVE-2022-43443 is a high-severity vulnerability in Buffalo Wsr-3200ax4s Firmware with a CVSS 3.x base score of 8.8. 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-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Buffalo Wsr-3200ax4s Firmware
Published: 2022-12-19
Last modified: 2026-06-17

Description

OS command injection vulnerability in Buffalo network devices allows an network-adjacent attacker to execute an arbitrary OS command if a specially crafted request is sent to the management page.

Frequently asked questions

What is CVE-2022-43443?: OS command injection vulnerability in Buffalo network devices allows an network-adjacent attacker to execute an arbitrary OS command if a specially crafted request is sent to the management page.
How severe is CVE-2022-43443?: CVE-2022-43443 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-43443 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-43443?: CVE-2022-43443 primarily affects Buffalo Wsr-3200ax4s Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-43443?: 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-2022-43443 published?: CVE-2022-43443 was published on 2022-12-19 and last updated on 2026-06-17.

References

Affected products (11)

cpe:2.3:o:buffalo:wsr-3200ax4s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:wsr-3200ax4b_firmware:1.25:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:wsr-2533dhp2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:wsr-a2533dhp2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:wsr-2533dhp3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:wsr-a2533dhp3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:wsr-2533dhpl2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:wsr-2533dhpls_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:wsr-2533dhp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:wsr-2533dhpl_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:wcr-1166ds_firmware:*:*:*:*:*:*:*:*

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