CVE-2025-31053Network attack vector

Authenticated arbitrary file deletion via path traversal

Published May 23, 2025 · Updated Apr 28, 2026

Path traversal in QuantumCloud KBx Pro Ultimate before 8.0.5 allows remote authenticated users to delete server files. The plugin file-deletion path accepts an insufficiently validated file path, permitting traversal outside the intended directory. Subscriber-level access is sufficient; deletion of WordPress core or configuration files interrupts the site and enables remote code execution.

CVSS severity7.7
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in QuantumCloud KBx Pro Ultimate before 8.0.5 allows remote authenticated users to delete server files. The plugin file-deletion path accepts an insufficiently validated file path, permitting traversal outside the intended directory. Subscriber-level access is sufficient; deletion of WordPress core or configuration files interrupts the site and enables remote code execution.

The record

CVE
CVE-2025-31053
Published
May 23, 2025
Updated
Apr 28, 2026
Vendor
QuantumCloud
Product
KBx Pro Ultimate
Classifications
CWE-22, CAPEC-126, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=8.0.5 changes=[{"at":"8.0.5","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

QuantumCloud · KBx Pro Ultimateversion=0 <=8.0.5 changes=[{"at":"8.0.5","status":"unaffected"}]

Published CVSS scores

7.7PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
8.1WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1485Data Destruction

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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