SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityDeferred

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.

HIGH 8.8EPSS 0.41%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.41% probability · 35th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-266
Source
audit@patchstack.com
EPSS trend
0%3%5%26 October 2026: 0.41%26 October 202626 October 2026

EPSS 0.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.