PaperCut MF/PaperCut NG Web Management Interface access control

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.1$0-$5k0.00

Summaryinfo

A vulnerability was found in PaperCut MF and PaperCut NG. It has been declared as critical. This issue affects some unknown processing of the component Web Management Interface. Such manipulation leads to access control. This vulnerability is uniquely identified as CVE-2026-81578. The attack can be launched remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in PaperCut MF and PaperCut NG (version now known) and classified as critical. Affected by this issue is some unknown processing of the component Web Management Interface. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at papercut.com. This vulnerability is handled as CVE-2026-81578 since 08/27/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but an exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/14/2026). The MITRE ATT&CK project declares the attack technique as T1068.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 341348 (PaperCut MF < 24.1.9.76515 / 25.x < 25.0.12.76509 / 26.x < 26.0.4.76507 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. This issue was added on 08/31/2026 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 09/14/2026:

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BO

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (341348) and EUVD (EUVD-2026-67713). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 8.1

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Attacked

EPSS Score: 🔒
EPSS Percentile: 🔒

KEV Added: 🔒
KEV Due: 🔒
KEV Remediation: 🔒
KEV Ransomware: 🔒
KEV Notice: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 341348
Nessus Name: PaperCut MF < 24.1.9.76515 / 25.x < 25.0.12.76509 / 26.x < 26.0.4.76507 Multiple Vulnerabilities

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/27/2026 CVE reserved
08/28/2026 +1 days Advisory disclosed
08/28/2026 +0 days VulDB entry created
09/14/2026 +17 days VulDB entry last update

Sourcesinfo

Advisory: papercut.com
Status: Confirmed

CVE: CVE-2026-81578 (🔒)
GCVE (CVE): GCVE-0-2026-81578
GCVE (VulDB): GCVE-100-396752
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/28/2026 18:01
Updated: 09/14/2026 04:45
Changes: 08/28/2026 18:01 (63), 08/29/2026 07:35 (1), 08/31/2026 16:45 (2), 08/31/2026 16:59 (12), 08/31/2026 21:07 (2), 09/14/2026 04:45 (11)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!