CVE-2026-81578

KEV
Published: Ago 28, 2026 Last Modified: Set 01, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,8
Source: eb41dac7-0af8-4f84-9f6d-0272772514f4
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
CRITICAL 9,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0039
Percentile
0,3th
Updated

EPSS Score Trend (Last 3 Days)

305

Authentication Bypass by Primary Weakness

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Bypass Protection Mechanism
Applicable Platforms
All platforms may be affected
View CWE Details
Application

Papercut Ng by Papercut

Product Information
Vendor Papercut
Product Papercut Ng
Version Range Affected
From 26.0.2 (inclusive)
To 26.0.4 (exclusive)
cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Papercut Ng by Papercut

Product Information
Vendor Papercut
Product Papercut Ng
Version Range Affected
To 24.1.9 (exclusive)
cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Papercut Mf by Papercut

Product Information
Vendor Papercut
Product Papercut Mf
Version Range Affected
From 26.0.2 (inclusive)
To 26.0.4 (exclusive)
cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Papercut Mf by Papercut

Product Information
Vendor Papercut
Product Papercut Mf
Version Range Affected
From 25.0.2 (inclusive)
To 25.0.12 (exclusive)
cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Papercut Ng by Papercut

Product Information
Vendor Papercut
Product Papercut Ng
Version Range Affected
From 25.0.2 (inclusive)
To 25.0.12 (exclusive)
cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Papercut Mf by Papercut

Product Information
Vendor Papercut
Product Papercut Mf
Version Range Affected
To 24.1.9 (exclusive)
cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/rapid7/metasploit-framework/pull/21842
https://github.com/rapid7/metasploit-framework/pull/21842
https://www.cisa.gov/known-exploited-vulnerabilities-catalo…
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026…
https://www.papercut.com/kb/Main/security-bulletin-27-aug-2…
https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-…