PatchTheCVECVE-2025-49901: Authentication Bypass Using an Alternate Path or Channel vulnerability in quantumcloud Simple Link Directory q
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CRITICAL 9.8REMOTE
CVE-2025-49901 is a critical-severity flaw (CVSS 9.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.7% (top 46%) |
| CISA exploited list | No |
| Weakness | CWE-288 |
| Published | 2025-10-22 |
| Last modified | 2026-10-23 |
Publisher (CNA): Patchstack
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Fedora 46 · pspp · FIXED · 2.1.3-2.fc46 · FEDORA-2026-0d6444911b · source
sudo dnf upgrade --advisory=FEDORA-2026-0d6444911b
Fedora ELN · barman · FIXED · 3.20.1-3.eln159 · FEDORA-2026-45ecf042c2 · source
sudo dnf upgrade --advisory=FEDORA-2026-45ecf042c2
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: Nxploited/CVE-2025-49901 (0 stars)
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.