SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityDeferred

CVE-2025-49901

Authentication Bypass Using an Alternate Path or Channel vulnerability in quantumcloud Simple Link Directory qc-simple-link-directory allows Authentication Abuse.This issue affects Simple Link Directory: from n/a through < 14.8.1.

CRITICAL 9.8EPSS 0.69%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Authentication Bypass Using an Alternate Path or Channel vulnerability in quantumcloud Simple Link Directory qc-simple-link-directory allows Authentication Abuse.This issue affects Simple Link Directory: from n/a through < 14.8.1.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.69% probability · 51th percentile
CISA KEV
Not listed
Weakness
CWE-288
Source
audit@patchstack.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.