What is the CVSS score of CVE-2023-4568?

CVE-2023-4568 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N. EPSS exploitation probability: 3.6%.

Is there a public PoC exploit available for CVE-2023-4568?

Yes, a public proof-of-concept exploit is available for CVE-2023-4568. Prioritise patching immediately. EPSS: 3.6%.

Papercut Ng CVE-2023-4568

MEDIUM

Improper Authentication (CWE-287)

2023-09-13 vulnreport@tenable.com

Authentication Bypass Papercut Ng Papercut

6.5

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-287 OWASP Top 10:2025 A07:2025 - Authentication Failures ASVS 5.0 V6 - Authentication Authentication mechanism validation MITRE ATT&CK 2 techniques across 2 tactics: Defense Evasion, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 6.5 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.
Exploit ScenarioDerived	A remote attacker could bypass authentication mechanisms to gain unauthorized access by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 3.6% exploitation probability (EPSS)

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AnalysisAI

PaperCut NG allows for unauthenticated XMLRPC commands to be run by default. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. PaperCut NG allows for unauthenticated XMLRPC commands to be run by default. Versions 22.0.12 and below are confirmed to be affected, but later versions may also be affected due to lack of a vendor supplied patch. Affected products include: Papercut Papercut Ng.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.5 MEDIUM

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

DescriptionNVD

PaperCut NG allows for unauthenticated XMLRPC commands to be run by default. Versions 22.0.12 and below are confirmed to be affected, but later versions may also be affected due to lack of a vendor supplied patch.

Threat Intelligence Overview

EPSS Score

3.6%

Top 12% exploitable

Exploit

POC

Public exploit code exists

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS POC (1)

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC Yes

EPSS 3.6%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +4

CVSS: +32

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*

More in Papercut Ng

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CVE-2023-27351 HIGH Act Now POC

7.5 Apr 20

Authentication bypass in PaperCut NG and PaperCut MF print management software allows unauthenticated remote attackers t

CVE-2023-27350 CRITICAL Emergency POC

9.8 Apr 20

This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Bui

CVE-2023-39143 CRITICAL Act Now POC

9.8 Aug 04

PaperCut NG and PaperCut MF before 22.1.3 on Windows allow path traversal, enabling attackers to upload, read, or delete

CVE-2023-2533 HIGH This Week POC

8.8 Jun 20

A Cross-Site Request Forgery (CSRF) vulnerability has been identified in PaperCut NG/MF, which, under specific condition

CVE-2024-1222 CRITICAL Act Now

9.8 Mar 14

This allows attackers to use a maliciously formed API request to gain access to an API authorization level with elevated

CVE-2019-12135 CRITICAL Act Now

9.8 Jun 06

An unspecified vulnerability in the application server in PaperCut MF and NG versions 18.3.8 and earlier and versions 19

CVE-2019-8948 CRITICAL Act Now

9.8 Feb 20

PaperCut MF before 18.3.6 and PaperCut NG before 18.3.6 allow script injection via the user interface, aka PC-15163. Rat

CVE-2024-8404 HIGH This Week

7.8 Sep 26

An arbitrary file deletion vulnerability exists in PaperCut NG/MF, specifically affecting Windows servers with Web Print

CVE-2024-4712 HIGH This Week

7.8 May 14

An arbitrary file creation vulnerability exists in PaperCut NG/MF that only affects Windows servers with Web Print enabl

CVE-2024-3037 HIGH This Week

7.8 May 14

An arbitrary file deletion vulnerability exists in PaperCut NG/MF, specifically affecting Windows servers with Web Print

CVE-2023-3486 HIGH This Week

7.5 Jul 25

An authentication bypass exists in PaperCut NG versions 22.0.12 and prior that could allow a remote, unauthenticated att

CVE-2024-1882 HIGH This Week

7.2 Mar 14

This vulnerability allows an already authenticated admin user to create a malicious payload that could be leveraged for

Same weakness CWE-287 – Improper Authentication

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