How severe is CVE-2025-39542?

CVE-2025-39542 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-39542 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-39542?

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-2025-39542 have an EU (EUVD) identifier?

Yes. CVE-2025-39542 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11743.

When was CVE-2025-39542 published?

CVE-2025-39542 was published on 2025-04-17 and last updated on 2026-06-17.

CVE-2025-39542

CVE-2025-39542 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. 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-266.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-11743
Weakness: CWE-266
Published: 2025-04-17
Last modified: 2026-06-17

Description

Incorrect Privilege Assignment vulnerability in Jauhari Xelion Xelion Webchat xelion-webchat allows Privilege Escalation.This issue affects Xelion Webchat: from n/a through <= 9.1.0.

Frequently asked questions

What is CVE-2025-39542?: Incorrect Privilege Assignment vulnerability in Jauhari Xelion Xelion Webchat xelion-webchat allows Privilege Escalation.This issue affects Xelion Webchat: from n/a through <= 9.1.0.
How severe is CVE-2025-39542?: CVE-2025-39542 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-39542 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-39542?: 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-2025-39542 have an EU (EUVD) identifier?: Yes. CVE-2025-39542 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11743.
When was CVE-2025-39542 published?: CVE-2025-39542 was published on 2025-04-17 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/xelion-webchat/vulnerability/wordpress-xelion-webchat-9-1-0-privilege-escalation-vulnerability?_s_id=cve

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