How severe is CVE-2021-3252?

CVE-2021-3252 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-3252 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3252?

CVE-2021-3252 affects Kaco-newenergy Xp100u Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3252?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-3252 published?

CVE-2021-3252 was published on 2021-02-23 and last updated on 2026-06-17.

CVE-2021-3252

CVE-2021-3252 is a high-severity vulnerability in Kaco-newenergy Xp100u Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-522.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-522
Affected product: Kaco-newenergy Xp100u Firmware
Published: 2021-02-23
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-3252?: CVE-2021-3252 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-3252 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3252?: CVE-2021-3252 affects Kaco-newenergy Xp100u Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3252?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-3252 published?: CVE-2021-3252 was published on 2021-02-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:kaco-newenergy:xp100u_firmware:xp-java_2.0:*:*:*:*:*:*:*

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