How severe is CVE-2021-46378?

CVE-2021-46378 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 high, integrity none, and availability none.

Is CVE-2021-46378 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 32% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46378?

CVE-2021-46378 affects Dlink Dir-850l Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46378?

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-2021-46378 published?

CVE-2021-46378 was published on 2022-03-04 and last updated on 2026-06-17.

CVE-2021-46378

CVE-2021-46378 is a high-severity vulnerability in Dlink Dir-850l Firmware with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 32% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-425.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 32% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-425
Affected product: Dlink Dir-850l Firmware
Published: 2022-03-04
Last modified: 2026-06-17

Description

DLink DIR850 ET850-1.08TRb03 is affected by an incorrect access control vulnerability through an unauthenticated remote configuration download.

Frequently asked questions

What is CVE-2021-46378?: DLink DIR850 ET850-1.08TRb03 is affected by an incorrect access control vulnerability through an unauthenticated remote configuration download.
How severe is CVE-2021-46378?: CVE-2021-46378 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 high, integrity none, and availability none.
Is CVE-2021-46378 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 32% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46378?: CVE-2021-46378 affects Dlink Dir-850l Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46378?: 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-2021-46378 published?: CVE-2021-46378 was published on 2022-03-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dir-850l_firmware:1.08trb03:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-850l Firmware

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CVE-2018-20675 — Critical (CVSS 9.8): D-Link DIR-822 C1 before v3.11B01Beta, DIR-822-US C1 before v3.11B01Beta, DIR-850L A* before v1.21B08Beta, DIR-850L B*…
CVE-2016-6563 — Critical (CVSS 9.8): Processing malformed SOAP messages when performing the HNAP Login action causes a buffer overflow in the stack in some…
CVE-2018-9032 — Critical (CVSS 9.8): An authentication bypass vulnerability on D-Link DIR-850L Wireless AC1200 Dual Band Gigabit Cloud Router (Hardware…
CVE-2017-14429 — Critical (CVSS 9.8): The DHCP client on D-Link DIR-850L REV. A (with firmware through FW114WWb07_h2ab_beta1) and REV. B (with firmware…
CVE-2017-14421 — Critical (CVSS 9.8): D-Link DIR-850L REV. B (with firmware through FW208WWb02) devices have a hardcoded password of…

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