How severe is CVE-2022-43621?

CVE-2022-43621 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-2022-43621 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-43621?

CVE-2022-43621 primarily affects Dlink Dir-1935 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-43621?

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-2022-43621 published?

CVE-2022-43621 was published on 2023-03-29 and last updated on 2026-06-17.

CVE-2022-43621

CVE-2022-43621 is a high-severity vulnerability in Dlink Dir-1935 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-697.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-697
Affected product: Dlink Dir-1935 Firmware
Published: 2023-03-29
Last modified: 2026-06-17

Description

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-1935 1.03 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from an incorrectly implemented comparison. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-16152.

Frequently asked questions

What is CVE-2022-43621?: This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-1935 1.03 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HNAP login requests. The issue results from an incorrectly implemented comparison. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-16152.
How severe is CVE-2022-43621?: CVE-2022-43621 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-2022-43621 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-43621?: CVE-2022-43621 primarily affects Dlink Dir-1935 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-43621?: 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-2022-43621 published?: CVE-2022-43621 was published on 2023-03-29 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:dlink:dir-1935_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-1935_firmware:1.03:b1:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-1935_firmware:1.03:b2:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-1935 Firmware

CVE-2022-43630 — High (CVSS 8.8): This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link…
CVE-2022-43622 — High (CVSS 8.8): This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link…
CVE-2022-43620 — High (CVSS 8.8): This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link…
CVE-2022-43633 — Medium (CVSS 6.8): This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link…
CVE-2022-43632 — Medium (CVSS 6.8): This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link…
CVE-2022-43631 — Medium (CVSS 6.8): This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link…

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