How severe is CVE-2025-66735?

CVE-2025-66735 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-2025-66735 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66735?

CVE-2025-66735 affects Youlai Youlai-boot. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66735?

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.

Does CVE-2025-66735 have an EU (EUVD) identifier?

Yes. CVE-2025-66735 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204742.

When was CVE-2025-66735 published?

CVE-2025-66735 was published on 2025-12-22 and last updated on 2026-06-17.

CVE-2025-66735

CVE-2025-66735 is a high-severity vulnerability in Youlai Youlai-boot 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-284.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204742
Weakness: CWE-284
Affected product: Youlai Youlai-boot
Published: 2025-12-22
Last modified: 2026-06-17

Description

youlai-boot V2.21.1 is vulnerable to Incorrect Access Control. The getRoleForm function in SysRoleController.java does not perform permission checks, which may allow non-root users to directly access root roles.

Frequently asked questions

What is CVE-2025-66735?: youlai-boot V2.21.1 is vulnerable to Incorrect Access Control. The getRoleForm function in SysRoleController.java does not perform permission checks, which may allow non-root users to directly access root roles.
How severe is CVE-2025-66735?: CVE-2025-66735 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-2025-66735 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66735?: CVE-2025-66735 affects Youlai Youlai-boot. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66735?: 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.
Does CVE-2025-66735 have an EU (EUVD) identifier?: Yes. CVE-2025-66735 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204742.
When was CVE-2025-66735 published?: CVE-2025-66735 was published on 2025-12-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:youlai:youlai-boot:2.21.1:*:*:*:*:*:*:*

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CVE-2025-55469 — Critical (CVSS 9.8): Incorrect access control in youlai-boot v2.21.1 allows attackers to escalate privileges and access the Administrator…
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