#VU112894 Incorrect Implementation of Authentication Algorithm in Revolution Pi Webstatus and Revolution Pi OS Bullseye - CVE-2025-41646

Vulnerability identifier: #VU112894

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-41646

CWE-ID: CWE-303

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Revolution Pi Webstatus
Other software / Other software solutions
Revolution Pi OS Bullseye
Other software / Other software solutions

Vendor: Kunbus

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to implicit type conversion within the password check. A remote attacker can bypass authentication on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Revolution Pi Webstatus: - - 2.4.5

Revolution Pi OS Bullseye: All versions

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External links
https://psirt.kunbus.com/.well-known/csaf/white/2025/kunbus-2025-0000003.json
https://www.kunbus.com/en/productsecurity/Kunbus-2025-0000003
https://www.cisa.gov/news-events/ics-advisories/icsa-25-191-09

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.