What is CVE-2021-34544?

CVE-2021-34544 is a medium-severity vulnerability in Bkw Solar-Log 500, classified under Cleartext Storage of Sensitive Information. CVSS score: 6.5/10. Published 2021-12-07.

How severe is CVE-2021-34544?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Bkw Solar-Log 500

CVE-2021-34544

An issue was discovered in Solar-Log 500 before 2.8.2 Build 52 23.04.2013. In /export.html, email.html, and sms.html, cleartext passwords are stored. This may allow sensitive information to be read by someone with access to the device. 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.

Published 2021-12-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (62.4th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: +0.000

Affected products

Bkw Solar-Log 500
Bkw Solar-Log 500 Firmware — versions 2.8.2

Weakness classification (CWE)

CWE-312 — Cleartext Storage of Sensitive Information

References

www.solar-log.com/en/support/firmware/ (Product, Release Notes, Vendor Advisory)
drive.google.com/file/d/1N8Ch1UGNcoocUaPhOe_1mAECOe5kr4pt/view (Exploit, Third Party Advisory)
www.exploit-db.com/exploits/49987 (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2021-34544?: CVE-2021-34544 is a medium-severity vulnerability in Bkw Solar-Log 500, classified under Cleartext Storage of Sensitive Information. CVSS score: 6.5/10. Published 2021-12-07.
How severe is CVE-2021-34544?: Medium severity. CVSS v3 base score is 6.5 out of 10.