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CVE-2021-3252

25
FAUCET Score

CVE-2021-3252 describes an information disclosure vulnerability in KACO New Energy XP100U and its firmware, XP-JAVA 2.0, due to incorrect access control. During the authentication process, the local server always returns credentials in plain-text, regardless of the provided password. This vulnerability carries a CVSS score of 7.5 (High), indicating a network-based attack with low complexity that can lead to high confidentiality impact without requiring user interaction. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
xp-java_2.0CPE matchmatch criteria
cpe:2.3:o:kaco-newenergy:xp100u_firmware:xp-java_2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.59%
Probability of exploitation in next 30 days
EPSS Percentile
83.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0259 is in the 71st percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

tiger-team-1337.blogspot.com / 2021/01/kaco-xp100u-hmi-credential-leak.html
ExploitTechnical DescriptionThird Party Advisory
twitter.com / Kevin2600/status/1351189347501023238
Third Party Advisory
us-cert.cisa.gov / ics/alerts/ICS-ALERT-15-224-01
Third Party AdvisoryUS Government Resource