How severe is CVE-2021-20635?

CVE-2021-20635 has a CVSS 3.x base score of 6.5, rated medium 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 none, and availability none.

Is CVE-2021-20635 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20635?

CVE-2021-20635 affects Logitech Lan-wh450n/gr Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20635?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-20635 published?

CVE-2021-20635 was published on 2021-02-12 and last updated on 2026-06-17.

CVE-2021-20635

CVE-2021-20635 is a medium-severity vulnerability in Logitech Lan-wh450n/gr Firmware with a CVSS 3.x base score of 6.5. 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-307.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.3
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-307
Affected product: Logitech Lan-wh450n/gr Firmware
Published: 2021-02-12
Last modified: 2026-06-17

Description

Improper restriction of excessive authentication attempts in LOGITEC LAN-WH450N/GR allows an attacker in the wireless range of the device to recover PIN and access the network.

Frequently asked questions

What is CVE-2021-20635?: Improper restriction of excessive authentication attempts in LOGITEC LAN-WH450N/GR allows an attacker in the wireless range of the device to recover PIN and access the network.
How severe is CVE-2021-20635?: CVE-2021-20635 has a CVSS 3.x base score of 6.5, rated medium 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 none, and availability none.
Is CVE-2021-20635 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20635?: CVE-2021-20635 affects Logitech Lan-wh450n/gr Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20635?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20635 published?: CVE-2021-20635 was published on 2021-02-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:logitech:lan-wh450n\/gr_firmware:-:*:*:*:*:*:*:*

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