Auth bypass in Bkw Solar-Log 500
CVE-2021-34543
The web administration server in Solar-Log 500 before 2.8.2 Build 52 does not require authentication, which allows remote attackers to gain administrative privileges by connecting to the server. As a result, the attacker can modify configuration files and change the system status. Fixed with 3.0.0-60 11.10.2013 for SL 200, 500, 1000 / not existing for SL 250, 300, 1200, 2000, SL 50 Gateway, SL Base.
Vulnerability class: Broken Authentication
EPSS: 0.029 (85.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Bkw Solar-log_500
- Bkw Solar-log_500_firmware — versions 2.8.2
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Third Party Advisory)
- cve@mitre.org (Product, Release Notes, Vendor Advisory)
- cve@mitre.org (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-34543?
- CVE-2021-34543 is a high-severity vulnerability in Bkw Solar-Log 500, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2021-12-07.
- How severe is CVE-2021-34543?
- High severity. CVSS v3 base score is 7.5 out of 10.