What is CVE-2021-3252?

CVE-2021-3252 is a high-severity vulnerability in Kaco-Newenergy Xp100u, classified under Insufficiently Protected Credentials. CVSS score: 7.5/10. Published 2021-02-23.

How severe is CVE-2021-3252?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Kaco-Newenergy Xp100u

CVE-2021-3252

KACO New Energy XP100U Up to XP-JAVA 2.0 is affected by incorrect access control. Credentials will always be returned in plain-text from the local server during the KACO XP100U authentication process, regardless of whatever passwords have been provided, which leads to an information disclosure vulnerability.

Published 2021-02-23 · last modified 2026-06-17.

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:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.026 (84.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000

Affected products

Kaco-Newenergy Xp100u
Kaco-Newenergy Xp100u Firmware — versions xp-java_2.0

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

References

us-cert.cisa.gov/ics/alerts/ICS-ALERT-15-224-01 (US Government Resource, Third Party Advisory)
twitter.com/Kevin2600/status/1351189347501023238 (Third Party Advisory)
tiger-team-1337.blogspot.com/2021/01/kaco-xp100u-hmi-credential-leak.html (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-3252?: CVE-2021-3252 is a high-severity vulnerability in Kaco-Newenergy Xp100u, classified under Insufficiently Protected Credentials. CVSS score: 7.5/10. Published 2021-02-23.
How severe is CVE-2021-3252?: High severity. CVSS v3 base score is 7.5 out of 10.