How severe is CVE-2025-63362?

CVE-2025-63362 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-63362 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63362?

CVE-2025-63362 affects Waveshare Rs232/485 To Wifi Eth (b) Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63362?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-63362 have an EU (EUVD) identifier?

Yes. CVE-2025-63362 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201260.

When was CVE-2025-63362 published?

CVE-2025-63362 was published on 2025-12-04 and last updated on 2026-06-17.

CVE-2025-63362

CVE-2025-63362 is a critical-severity vulnerability in Waveshare Rs232/485 To Wifi Eth (b) Firmware with a CVSS 3.x base score of 9.8. 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-620.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201260
Weakness: CWE-620
Affected product: Waveshare Rs232/485 To Wifi Eth (b) Firmware
Published: 2025-12-04
Last modified: 2026-06-17

Description

Waveshare RS232/485 TO WIFI ETH (B) Serial to Ethernet/Wi-Fi Gateway Firmware V3.1.1.0: HW 4.3.2.1: Webpage V7.04T.07.002880.0301 allows attackers to set the Administrator password and username as blank values, allowing attackers to bypass authentication.

Frequently asked questions

What is CVE-2025-63362?: Waveshare RS232/485 TO WIFI ETH (B) Serial to Ethernet/Wi-Fi Gateway Firmware V3.1.1.0: HW 4.3.2.1: Webpage V7.04T.07.002880.0301 allows attackers to set the Administrator password and username as blank values, allowing attackers to bypass authentication.
How severe is CVE-2025-63362?: CVE-2025-63362 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-63362 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63362?: CVE-2025-63362 affects Waveshare Rs232/485 To Wifi Eth (b) Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63362?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-63362 have an EU (EUVD) identifier?: Yes. CVE-2025-63362 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201260.
When was CVE-2025-63362 published?: CVE-2025-63362 was published on 2025-12-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:waveshare:rs232\/485_to_wifi_eth_\(b\)_firmware:3.1.1.0:*:*:*:*:*:*:*

More vulnerabilities in Waveshare Rs232/485 To Wifi Eth (b) Firmware

CVE-2025-63363 — High (CVSS 7.5): A lack of Management Frame Protection in Waveshare RS232/485 TO WIFI ETH (B) Serial to Ethernet/Wi-Fi Gateway Firmware…
CVE-2025-63364 — High (CVSS 7.5): Waveshare RS232/485 TO WIFI ETH (B) Serial to Ethernet/Wi-Fi Gateway Firmware V3.1.1.0: HW 4.3.2.1: Webpage…
CVE-2025-63361 — Medium (CVSS 5.7): Waveshare RS232/485 TO WIFI ETH (B) Serial to Ethernet/Wi-Fi Gateway Firmware V3.1.1.0: HW 4.3.2.1: Webpage…

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